ATIKA SCHOOL
  • Home
    • JOBS IN KENYA AND ABROAD FOR KENYANS AND BEYOND
    • How its Done
    • KNEC Portal
    • Atika School Advanced Search
    • News and Opinions
    • Academic Environment
    • KNEC KCSE PROJECT INSTRUCTIONS
    • SITEMAP
    • About Us? >
      • About Us
      • Learn more about us
  • OUR PRODUCTS
    • All Categories >
      • Category
      • FREE NOVELS >
        • COURSE BOOKS
        • KCSE KISWAHILI SETBOOKS
        • Backed Up Files and Archives
        • FREE DOCUMENTS
        • PRIMARY 8-4-4 BASED RESOURCES
        • STANDARD 8 RESOURCES
        • HIGH SCHOOL RESOURCES >
          • Biology Paper 3 Exams
          • Secondary Examinations
        • PRIMARY CBC BASED RESOURCES
        • COLLEGE & VARSITY RESOURCES
    • PRIMARY RESOURCES CBC
    • PRIMARY RESOURCES 8-4-4
    • SECONDARY RESOURCES
    • NOTES & TUTORIALS
    • COLLEGE RESOURCES
    • NOVELS and OTHER BOOKS
  • EXAMINATIONS
    • PRIMARY EXAMS >
      • Primary Assignments and Random Exams
      • CBC
      • 8-4-4
      • STANDARD 8 PAST PAPERS 8-4-4 BASED
    • MOCKS AND JOINT EXAMS >
      • FORM 1 QUESTION PAPERS, ANSWERS AND MARKING SCHEMES COLLECTIONS
      • FORM 2 QUESTION PAPERS, ANSWERS AND MARKING SCHEMES COLLECTIONS
      • FORM 3 EXAMINATIONS, QUESTION PAPERS AND ANSWERS
      • MOCKS PAST EXAMS BY REGION
    • KCPE >
      • KCPE BY YEAR >
        • KCPE 2020 RESULTS, REPORTS, QUESTIONS AND ANSWERS
        • KCPE PAST PAPERS 2019 REPORTS, RESULTS, QUESTIONS AND ANSWERS
      • KCPE PAST PAPERS PER SUBJECT
      • KCPE PAST PAPERS AND ANSWERS
      • KCPE MATHEMATICS TOPICAL QUESTIONS FROM 1989 TO LAST YEAR
    • KCSE >
      • KCSE BY YEAR >
        • KNEC KCSE PAST PAPERS, MARKING SCHEMES, QUESTIONS & ANSWERS
      • KCSE BY SUBJECT >
        • KCSE PAST PAPERS BY SUBJECT
        • Free KCSE Past Papers Mathematics
        • Free KCSE Biology Questions and Answers
    • QUESTIONS & ANSWERS >
      • SECONDARY >
        • LANGUAGES >
          • A DOLL'S HOUSE BY HENRIK IBSEN RESOURCES
        • TECHNICALS >
          • COMPUTER STUDIES >
            • COMPUTER STUDIES Q & A
            • kcse computer studies paper 2 AND 3 Questions & Answers
          • BUSINESS STUDIES QUESTIONS & ANSWERS
          • KCSE AGRICULTURE TOPICAL QUESTIONS AND ANSWERS
          • KCSE HOME SCIENCE DIRECT QUESTIONS AND ANSWERS
        • SCIENCES >
          • KCSE Mathematics Topical Questions
          • KCSE Biology Topical Questions and Answers
          • CHEMISTRY TOPICAL QUESTIONS AND ANSWERS
          • KCSE Physics Topical Questions
          • KCSE physics Practical Sample Quiz
        • HUMANITIES >
          • ISLAMIC RELIGIOUS EDUCATION (IRE) QUESTIONS AND ANSWERS
          • KCSE History Topical Questions and Answers
          • GEOGRAPHY TOPICAL QUESTIONS AND ANSWERS
      • PRIMARY >
        • Standard 4-8 Mathematics Topical Questions from Mocks and KCPE
        • Std 6 Mathematics Notes
  • TUTORIALS
    • SECONDARY >
      • SCIENCES >
        • FOCUS MATHEMATICS TUTORIALS AND EXAMS FREE
        • KCSE BIOLOGY NOTES
        • FREE KCSE CHEMISTRY NOTES
        • KCSE PHYSICS NOTES, AUDIOVISUALS AND MORE
      • LANGUAGES >
        • ENGLISH >
          • English KCSE Set Books
          • ENGLISH POETRY QUESTIONS WITH ANSWERS FOR K.C.S.E CANDIDATES
          • ENGLISH GRAMMAR #KCSE
        • CHOZI LA HERI - MWONGOZO
        • KIGOGO - MWONGOZO
        • USHAIRI MASWALI NA MAJIBU
        • MASWALI NA MAJIBU YA TUMBO LISILOSHIBA
        • KCSE Kiswahili Fasihi
      • TECHNICALS >
        • HOME SCIENCE NOTES
        • KCSE BUSINESS STUDIES NOTES
        • COMPUTER STUDIES NOTES LATEST
        • kcse Computer Studies Notes
        • KCSE AGRICULTURE NOTES, SYLLABUS, QUESTIONS, ANSWERS, SCHEMES OF WORK AND OTHERS
      • HUMANITIES >
        • KCSE History Notes Form 1 to 4
        • FREE KCSE CRE NOTES
        • KCSE GEOGRAPHY NOTES
        • IRE NOTES, AUDIOVISUAL, QUESTIONS AND ANSWERS
    • PRIMARY >
      • NOTES >
        • KISWAHILI
        • SOCIAL STUDIES >
          • STANDARD 4: SOCIAL STUDIES
        • SCIENCE
        • ENGLISH >
          • KCPE and Primary Level Compositions
        • MATHEMATICS >
          • KCPE Mathematics Notes
      • EXAMINATIONS >
        • DecaTurbo Online Series Examinations
        • CBC Kiswahili
        • FOCUS A365 SERIES K.C.P.E EXAMINATIONS FOR PRIMARY
        • Standard 8 (std) English Topical Questions
    • Other Supportive Documents >
      • Free Schemes of Work
      • SYLLABUS >
        • Primary 8-4-4 based Syllabus, Objectives and Lessons
        • Primary Mathematics Syllabus
      • MASOMO VIDEOS
  • CURRICULUM
    • NEW CURRICULUM DESIGNS >
      • PRIMARY >
        • PRE PRIMARY ONE CURRICULUM WITH SYLLABUS
        • PRE PRIMARY TWO CURRICULUM WITH SYLLABUS
      • SECONDARY >
        • KNEC KCSE SYLLABUS AND COURSE OUTLINES
      • COLLEGE >
        • Regulations for the TIVET Craft and Diploma Business Examinations
  • HIGH INSTITUTIONS
    • EXAMINATIONS >
      • College and Varsity Past Papers online
    • TUTORIALS >
      • COLLEGE AND UNIVERSITY NOTES AND TUTORIALS
  • CUSTOMER CARE
    • PRICING
    • Contact
    • Help & Support
    • DONATE
    • MPESA FORM
  • BLOGS
    • ENGLISH - EKEGUSII DICTIONARY
  • MEMBERSHIP RESOURCES
    • Assignments and Random Exams
    • TERM 3 2021 PRIMARY PAST REVISION PAPERS
    • SECONDARY EXAMINATIONS
    • Search Free Documents (PDF)
  • Archived Pages
    • C.R.E (CRE) QUESTION AND ANSWERS
    • TOP SECONDARY EXAMS ALL SUBJECTS

K.C.S.E Physics Q & A - MODEL 2018PP1QN17

29/7/2020

2 Comments

 

K.C.S.E Physics Q & A - MODEL 2018PP1QN17

​ (a) State Pascal’s principle of transmission of pressure in liquids. 
(b) Figure 10 shows heights of two immiscible liquids X and Y in a U-tube (drawn to scale).
Picture
​(i) State with a reason which of the two liquids X and Y has a higher density.
(ii) Determine the value of h. 
(iii) Given that the density of liquid Y is p, write down an expression for the density d of liquid X ¡n terms of p. 
(c) (i) With the aid of a diagram, describe how a liquid may be siphoned from one container to another using a flexible tube. 
(ii) State one application of the siphon.
answers
 (a) Pressure applied at one part in a liquid is transmitted equally to all other parts of the enclosed liquid. 
Picture
Picture
2 Comments
Print Friendly and PDF

K.C.S.E Physics Q & A - MODEL 2018PP1QN16

29/7/2020

0 Comments

 

K.C.S.E Physics Q & A - MODEL 2018PP1QN16

Picture

(a) An electric crane uses 8.0 x104 N of energy to lift a load of 2.0 X 104N in 4s.
(i) Determine the;
I power developed by the crane,
II height to which the load is lifted,
III efficiency of the crane whose motor is rated 2.5 X 104 W.
(ii) State two forms of energy transformation that lead to the crane’s inefficiency.
(b) A stone is dropped from the top of a building to the ground. On the axes provided, sketch a graph of potential energy against time for the stone.

Picture
answers
Picture
Picture
0 Comments
Print Friendly and PDF

K.C.S.E Physics Q & A - MODEL 2018PP1QN15

29/7/2020

0 Comments

 

(a) State Newton’s first law of motion.
(b) A wooden block resting on a horizontal bench is given an initial velocity u so that it slides on the bench for a distance x before it stops. Various values of x are measured for different values of the initial velocity. Figure 9 shows a graph of u2 against x.

Picture

(i) Determine the slope S of the graph.
(ii) Determine the value of k given that u2 = 20kd where k is a frictional constant for the surface.
(iii) State with a reason what happens to the value of k when the roughness of the bench surface is reduced.
(c) An object is thrown vertically upwards with an initial velocity of 30ms-1. Determine its maximum height (acceleration due to gravity g is 10 ms-1)

answers
​(a) A body remains in its state of rest or uniform motion in a straight line  unless acted upon by an external force. 
Picture
Picture
0 Comments
Print Friendly and PDF

K.C.S.E Physics Q & A - MODEL 2018PP1QN14

29/7/2020

0 Comments

 

K.C.S.E Physics Q & A - MODEL 2018PP1QN14

(a) State two differences between boiling and evaporation.
(b) State three ways in which loss of heat by conduction is minimized in a vacuum flask.
(c) In a certain experiment, 50g of dry steam at 100 °C was directed into some crushed ice at 0 °C. (Latent heal of vaporization of water is 2.26 X 106 Jkg-1, latent heat of fusion for ice is 3.34 X 105 Jkg-1 and specific heat capacity of water is 4.2 X 103 Jkg-1)
Determine the;

Picture

(i) quantity of heat lost by steam to change to water at 100 °C.
(ii) quantity of heat lost by water to cool to 0°C. 
(iii) mass of ice melted at  0°C.

answers
​(a) Boiling takes place at fixed temperature while evaporation takes at all temperatures. 
Boiling takes place in the entire liquid while evaporation takes place at the surface. 
(b) - Presence of a vacuum. 
- Poor conductor material used to make stopper. 
- Use of glass (poor conductor). 
Picture
Picture
0 Comments
Print Friendly and PDF

K.C.S.E Physics Q & A - MODEL 2017PP2QN19

28/7/2020

0 Comments

 

K.C.S.E Physics Q & A - MODEL 2017PP2QN19

​(a) Figure 10 shows a block diagram of a cathode ray oscilloscope (CRO).
Picture

State the names of the parts labelled B1 and B2.
(ii) State and explain the function of the part marked A.
(b) Figure 11 shows a trace of a signal observed on the screen of a CRO. The time-base setting is 20 mscm-2

Picture
Determine the frequency of the signal. 
(c) Explain why tunsten is used as a target in an x-ray tube.

answers
a) (i) B1 — y deflecting plates
B2 — x deflecting plates
(ii) Grid; controls the intensity by controlling the number of electrons reaching the screen.
If made more negative less electrons pass through.
Picture
c) Tungsten has a high melting point.
It can with stand high temperatures.
0 Comments
Print Friendly and PDF

K.C.S.E Physics Q & A - MODEL 2017PP2QN18

28/7/2020

0 Comments

 

K.C.S.E Physics Q & A - MODEL 2017PP2QN18

​(a) State two factors that affect the capacitance of a parallel plate capacitor. 
(b) Figure 9 shows an electric circuit in which three capacitors are connected across a power supply.
Picture
​Determine the;
(i) total capacitance, 
(ii) quantity of charge stored on the 8uF capacitor. 
answers
​(a) — Area of overlap of the plates
— Distance between the plates.
— Type of dielectric.
Picture
0 Comments
Print Friendly and PDF

K.C.S.E Physics Q & A - MODEL 2017PP2QN17

28/7/2020

0 Comments

 

K.C.S.E Physics Q & A - MODEL 2017PP2QN17

​(a) Figure 8 shows a conductor AB connected to a galvanometer and placed between two permanent magnets.
Picture
​(i) Conductor AB is moved perpendicular to the magnetic field.
 State and explain the observation made on the galvanometer. 
(ii) State the effect of moving the conductor faster.
(b) A transformer is used to step down 240V to 12 V for use in an electric appliance operating at 0.5 A. If the primary coil has 600 turns, determine the;
(i) number of turns ¡n the secondary coil, 
(ii) current in the primary coil. 
answers
​ a) i. A momentary deflection is observed, Conductor cuts the field.
An emf  is induced in AB Causing current in the circuit
ii. A bigger deflection is observed! higher current
Picture
0 Comments
Print Friendly and PDF

K.C.S.E Physics Q & A - MODEL 2017PP2QN16

28/7/2020

0 Comments

 

K.C.S.E Physics Q & A - MODEL 2017PP2QN16

​(a) Figure 7 shows a set up that may be used to observe photoelectric effect. A radiation is incident on the cathode. it is observed that the microammeter registers a current.
Picture

(i) Explain how the current is produced.
(ii) State with a reason what must be done for a higher current to be registered.
(iii) It was observed that for a certain incident radiation, no current was registered.
Explain this observation.
(b)A monochromatic light of wavelength 4.50 X 10-7 m is incident on a metal surface of threshold frequency 5.5 X 1014 Hz. (Speed of light c is 3.0 X 108ms and planks constant h is 6.63 X 10-34Js).
Determine
(i) the work function of the metal surface,
(ii) average kinetic energy of the emittal photoelectrons.

answers
 a)i. Radiations cause photo electrons to be ejected from the metal surface (cathode), the electrons are attracted by the anode hence  current flows.
ii)Source is made moved closer! increase anode voltage/accelerating voltage.
iii. The frequency of the incident radiation is below the thrsio1d frequency of the surface hence no emission can take place.
Picture
0 Comments
Print Friendly and PDF

K.C.S.E Physics Q & A - MODEL 2017PP2QN15

28/7/2020

0 Comments

 

K.C.S.E Physics Q & A - MODEL 2017PP2QN15

​(a) Figure 5 shows the interface between glass and air.
Picture
​Draw on the figure a ray diagram to illustrate the critical angle. 
(b) Figure 6 shows a ray of light incident at right angles to face AB of a right angled glass prism of refractive index 1.62.
Picture
​(i) Determine the critical angle of the material. 
(ii) Complete the ray diagram to show the path of light until it leaves the prism. 
(c)State any two applications of prisms. 
answers
Picture
Picture
​(c)- Dispersion of white light
- In periscopes
- In Binoculars
- In telescopes
0 Comments
Print Friendly and PDF

K.C.S.E Physics Q & A - MODEL 2017PP1QN18

28/7/2020

0 Comments

 

K.C.S.E Physics Q & A - MODEL 2017PP1QN18

(a) Figure 8 shows part of a hydraulic brake system.
Picture
​Describe how the systems works.
(b) State three conditions necessary for a driver to negotiate a bend on a flat level road at a relatively high speed. 
(c) Figure 9 shows two identical cans U and V each with a small opening at the top.
Different amounts of water were put into the cans and heated until the water started to boil.
Picture
​Explain what will be observed when both cans are then suddenly dipped into a cold water bath.
answers
(a) (i) The driver applies a force on the pedal.
 This force transmits pressure  the master cylinder fluid. 
 Equal pressure is transmitted to the wheel cylinder causing the pistons of the wheel cylinder to push brake shoe hence
 Pressing the brake pads that in turn press the wheel reducing its rotation. 
 When the applied force is removed, the return spring pulls back the shoe and pistons to the original position. 
(b) Higher friction (wider tyres, rougher road)
 Lower radius
 Higher mass
(c) U is observed to crush. 
It has more steam which when cooled creates a greater 
vacuum hence pressure causes  collapsing.
0 Comments
Print Friendly and PDF

K.C.S.E Physics Q & A - MODEL 2017PP1QN17

28/7/2020

0 Comments

 

K.C.S.E Physics Q & A - MODEL 2017PP1QN17

​(a) State the law of flotation. 
(b) Figure 6 shows two solids W and X made of the same material and immersed in water.
Picture
​(i) State with a reason which one of the containers experiences a greater upthrust.
(ii) Solid W weighs 12 N in air, 2 N ¡n water and 4 N in another liquid. Determine the density of the other liquid. 
(c) Figure 7 shows two identical wooden blocks each of mass 0.2 kg suspended in water by two strings M and N.
Picture
​Given that the upthrust on each block is 3.2 N, determine the tension in string;
(i) M, 
(ii) N. 
(d) State any one application of hydrometers. 
answers
​(a) A floating body displaces its own weight of the fluid in which it  floats.
Picture
0 Comments
Print Friendly and PDF

K.C.S.E Physics Q & A - MODEL 2017PP1QN16

28/7/2020

0 Comments

 

K.C.S.E Physics Q & A - MODEL 2017PP1QN16

​(a) In an experiment to determine the size of an oil molecule, oil is placed on the surface of water after sprinkling lycopodium powder on it.
(i) State two reasons why oil is used. 
(ii) State the function of the lycopodium powder. 
(iii) State any two assumptions that are made in this experiment. 
(iv) Explain why the oil spreads on the surface of water.
Picture

(b) The following data was obtained from an experiment to determine the size of a palm oil molecule.
— Volume of 100 drops of palm oil = 15.0mm3
— Area of a patch from one drop of oil = 8.0 X 104 mm2
Determine the size of a palm oil molecule.

answers
​(a) (i) Oil doesn’t mix with water. 
 Oil is less dense hence floats on the water surface. 
(ii) To show boundary of the oil patch clearly, for measurements to be taken. 
(iii)  The oil drops is a perfect sphere.
 The patch is monolayer.
 The patch is a perfect circIe
 Molecular diameter is uniform.
(iv)  The oil breaks the surface tension V making the patch to form a perfect circle.
Picture
0 Comments
Print Friendly and PDF

K.C.S.E Physics Q & A - MODEL 2017PP1QN15

28/7/2020

0 Comments

 

K.C.S.E Physics Q & A - MODEL 2017PP1QN15

​(a) A student was provided with several identical masses, a metre rule, a spring and a stand,
boss and clamp. Outline five steps that the student should follow in order to verify Hooke’s law. 
(b) Figure 4 shows a graph that was drawn from the results obtained in an experiment to study the extension of a spring.
Picture

From the graph determine;
(i) The spring constant K,
(ii) The load that causes an extension of 3 X 10-2 m.
(c) Three identical springs of spring constant 100 Nm-1 are arranged as shown in Figure 5 to support a 5 N load.

Picture
Determine the total extension in the arrangement.
answers
​(a) Hung the spring on the stand and note the position of the pointer using the metre rule.
 Suspend a mass o the spring and note the new position of the pointer.
 Increase the load in steps and record the position of the pointer for each load.
 Draw a table of weight against extension.
 Plot a graph of force against extension
Picture
Picture
0 Comments
Print Friendly and PDF

K.C.S.E Physics Q & A - MODEL 2017PP1QN14

28/7/2020

0 Comments

 

K.C.S.E Physics Q & A - MODEL 2017PP1QN14

(a) A tape attached to an accelerating trolley passes through a ticker timer that makes dots on it at a frequency of 50Hz. The ticker timer makes 10 dots on a 10cm long tape such
that; the distance a between the first two dots is 0.5 cm and the distance b between the last two dots is 1.5cm.
Picture
​(i) Determine the velocity of the trolley at:
(I) distance a, 
(II) distance b. 
(ii) Determine the acceleration of the trolley. 
(b) State with a reason what would be observed on the spacing between the dots on the tape when the trolley is made to move on a horizontal surface. 
ANSWERS
Picture
​(b)  The spacing reduces  with time.
 The trolley decelerates with time on a horizontal surface. 
0 Comments
Print Friendly and PDF

K.C.S.E Physics Q & A - MODEL 2016PP2QN18

27/7/2020

0 Comments

 

K.C.S.E Physics Q & A - MODEL 2016PP2QN18

​(a)State one factor that affects the speed of sound in a solid.
b)An observer stands half-way between two vertical cliffs that are L metres apart.He strikes a gong and measures the time interval, t, between the
echoes heard from the two cliffs. He moves a further 10m and again strikes the gong and measures the time interval between the echoes. The process is repeated several times. The graph in Figure 13 shows the relation between the time interval, t and the distance, x from the centre.
(i)From the graph, determine the value of x for which the time interval was 0.55.
Picture
​(ii)Given that t = 4x/v where v is the speed of sound in air, determine the value of v from the graph.
(iii)If the maximum time measured by the observer was t=4.7s, determine the distance L between the cliffs.
(c)A search boat uses a signal of frequency 6.0 x 104 Hz to detect a sunken ship directly below. Two reflected signals are received; one after 0.1 seconds from sunken boat and the other after 0.14 seconds from the sea bed. If the sea bed is 98 m below the boat, determine:-
(i)The speed of the signal in water. 
You may use the value of v from (ii) above.
(ii)The depth of the sunken ship below the boat
answers
​(a)Temperature
Density
(b)(i)47 metres
(ii)
Picture
​(iii)Distance = speed x time
 2D = distance to and from the cliff
 2D = 340.715 x 4.7
 D = 800.68 metres
(c)(i)Distance moved by sound from sea bed = 98 x 2 m
 V = (98 x 2)0.14
 = 1400 m/s
(ii) Distance = v x t
 = 1400 x 0.10/2
 = 70 m
0 Comments
Print Friendly and PDF

K.C.S.E Physics Q & A - MODEL 2016PP2QN17

27/7/2020

0 Comments

 

K.C.S.E Physics Q & A - MODEL 2016PP2QN17

​When a radiation was released into a diffusion cloud chamber, short thick tracks were observed. State with a reason, the type of radiation that was detected.
(b)The half-life of an element X is 3.83 days. A sample of this element is found to have an activity rate of 1.6 x 10^3 disintegrations per second at a particular time. 
Determine its activity rate after 19.15 days.
(c) State what is meant by an extrinsic semiconductor.
(d)Figure 11, shows a depletion layer in an unbiased p-n junction
Picture
​State how a battery can be used to make the depletion layer narrower.
(e)Figure 12, shows an incomplete circuit of a full wave rectifier.
Picture
​(i) Draw in the figure two more diodes to complete the circuit should be obtained.
answers
​(a)Alpha radiation. This radiation has a short range with intense ionization hence thick tracks
Picture
​(c)It is a semiconductor in which impurities have been added to change conductivity
​(d) By connecting it in a forward biased mode
Picture
​(ii)Across QS
0 Comments
Print Friendly and PDF

K.C.S.E Physics Q & A - MODEL 2016PP2QN16

27/7/2020

0 Comments

 

K.C.S.E Physics Q & A - MODEL 2016PP2QN16

​Figure 8, shows a circuit that may be used to charge a capacitor.
Picture
(i) state the observation on the milliameter when the circuit is switched on:
(ii) explain the observation in (i) above.
b)The circuit in figure 8 is left on for some time. State the value of p.d. across:
(i) the resistor R;
(ii) the capacitor C;
(c) sketch the graph of potential difference (V) across R against time.
​(d) Figure 9 shows three capacitors connected to a 10V battery
Picture
​Calculate:
(i) the combined capacitance of the three capacitors;
(ii) the charge on the 5.0 uF capacitor.
answers
​(a)(i)Current falls off to zero.Falling to zero deflects to maximum then zero.
(ii)Current flows when the capacitor is charging. When fully charged no current flows and potential difference (p.d.) is equal to charging voltage
(b) (i)VR = 0 volts
(ii)Vc = 5 Volts
Picture
Picture
0 Comments
Print Friendly and PDF

K.C.S.E Physics Q & A - MODEL 2016PP2QN15

27/7/2020

0 Comments

 

K.C.S.E Physics Q & A - MODEL 2016PP2QN15

Figure 15, shows two coils A and B placed close to each other. A is connected to a steady D.C. supply and a switch, B is connected to a sensitive galvanometer.
Picture
​i)The switch is now closed, state the observation made on the galvanometer. 
ii)Explain what would be observed if the switch is then opened. 
b) The primary coil of a transformer has 1000 turns and the secondary coil has 200 turns.
The primary coil is connected to a 240V ac. Mains supply.
i) Explain how an e.m.f is induced in the secondary coil. 
ii)Determine the secondary voltage.           
iii) Determine the efficiency of the transformer given that the current in the primary coil is 0.20A and in the secondary coil it is 0.80A. 
answers
(a) ​(i)The galvanometer will be deflected to one side and then back to zero.
(ii)A greater deflection will be obtained in the opposite direction as the current takes less time to die off than to build up
b)(i)The changing current in the primary coil induces a current in the secondary coil due to changing magnetic field of the primary current
ii)Ns/Np = Vs/Vp hence Vs = (240 x 200)/1000 = 48V
iii)Efficiency = power output/Power input x 100       
(4.8 x 0.8 x 100)/240 x 0.2= 80%
0 Comments
Print Friendly and PDF

K.C.S.E Physics Q & A - MODEL 2016PP2QN14

27/7/2020

0 Comments

 

K.C.S.E Physics Q & A - MODEL 2016PP2QN14

​Figure 6 shows a simple electric bell circuit
Picture
​(i)Name the parts labeled
(I) D
(II) E
(ii)When the switch is closed, the hammer hits the gong repeatedly.
Explain why:
(I) the hammer hits the gong. 
(II) the hammer hits the gong repeatedly.
(b) An electric bulb is rated 60 W, 240 V. Determine:
(i) the current that flows through it when it is connected to a 240 V supply.
(ii) the resistance of the bulb.
answers
​(i)D-Soft iron armature
 E-Contact screw
(ii) (I)Soft iron core is magnetized
    It attracts the armature
(II) Contact is broken
 The core then loses magnetism
 Armature spring back making contact again
Picture
0 Comments
Print Friendly and PDF

K.C.S.E Physics Q & A - MODEL 2016PP1QN18

27/7/2020

0 Comments

 

K.C.S.E Physics Q & A - MODEL 2016PP1QN18

(a) State Newton’s first law of motion
(b)A wooden block resting on a horizontal bench is given an initial velocity, u, so that it slides on the bench surface for a distance d, before coming to a stop. The values of d were measured and recorded for various values of initial velocity. Figure 10 shows the graph of u2 against d.

Picture

(i)Determine the slope, S of the graph
(ii)Given that u2 = 20 kd, where k is a constant for the bench surface, determine the value of k from the graph
(iii)State how the value of k would be affected by a change in the roughness of the bench surface
(c) A car of mass 800 kg starts from rest and accelerates at 1.2 ms-2.
Determine its momentum after it has moved 400 m from the starting point

answers
​(a)A body at rest or motion at uniform velocity tends to stay in that state unless acted on by an unbalanced force/ compelled by some external force to act
otherwise.
Picture
​(b)(iii) Increase in roughness increases k and vice versa
Uniform speed in a straight line – uniform velocity
Picture
0 Comments
Print Friendly and PDF

K.C.S.E Physics Q & A - MODEL 2016PP1QN17

27/7/2020

0 Comments

 

K.C.S.E Physics Q & A - MODEL 2016PP1QN17

​(a) When a bus goes round a bend on a flat road, it experiences a  centripetal force.
State what provides the centripetal force. 
(b) State the purpose of banking roads at bends.
Picture
​(c)A student whirls a stone of mass 0.2 kg tied to a string of length 0.4 m in a vertical plane at a constant speed of 2 revolutions per second. (Take acceleration due to gravity g as 10 m/s2)
(i) State two forces acting on the stone when it is at the highest point.
(ii) Determine the:
(I)Angular velocity of the stone 
(II)Tension in the string when the stone is at the highest point; 
answers
(a)Frictional force 
(b)Increases the centripetal force acting on the bus
 Provide more centripetal force
 Prevent skidding force, overturning or rolling
 Enable high speed or critical yield
(c) (i)The weight/ force of gravity
The tension on the string
Picture
0 Comments
Print Friendly and PDF

K.C.S.E Physics Q & A - MODEL 2016PP1QN16

27/7/2020

0 Comments

 

K.C.S.E Physics Q & A - MODEL 2016PP1QN16

(a)Define the term velocity ratio of a machine.
(b) Fig. 12 shows part of a hydraulic press. The plunger is the position where effort is applied while the Ram piston is the position where load is applied. The plunger has cross-section area, a m2 while the Ram piston has cross-section area, A m2.

Picture

When the plunger moves down a distance d the Ram piston moves up a distance D.
Derive an impression for the velocity ratio (V.R) in terms of A and a
c) A machine of velocity ratio 45, overcomes a load of 4.5 x 103N when an effort of 135N is applied. Determine:
(i)The mechanical advantage of the machine;
(ii) Efficiency of the machine;
(iii) The percentage of the work that goes to waste.

answers
​(a)It is the ratio of distance moved by effort to distance moved by load
Picture
Picture
0 Comments
Print Friendly and PDF

K.C.S.E Physics Q & A - MODEL 2016PP1QN15

27/7/2020

0 Comments

 

K.C.S.E Physics Q & A - MODEL 2016PP1QN15

​(a) State what is meant by an ideal gas 
(b) The pressure acting on a gas in a container was changed steadily while the temperature of the gas maintained constant. The value of volume V of the gas was measured for various values of pressure. The graph in figure 11 shows the relation between the pressure, p and the reciprocal of volume 1/v
Picture

(i) Suggest how the temperature of the gas could be kept constant
(ii) Given that the relation between the pressure P1 and the volume, V1 of the gas is given by PV = k, where k is a constant, use the graph to determine the value of k.
(iii) What physical quantity does k represent?
(iv)State one precaution you would take when performing such an experiment
(c) A gas occupies a volume of 4000 litres at a temperature of 370C and normal atmospheric pressure. Determine the new volume of the gas if it is heated at constant pressure to a temperature of 670C (normal atmospheric pressure P= 1.01 x 105 pa)

answers
​(a)A gas that obeys the gas laws perfectly
(b) (i)By changing pressure very slowly or by allowing gas to go to original temperature after each change
Picture
​(iii)Work done on the gas
(iv)Use dry gas
Make very small changes in pressure
Picture
0 Comments
Print Friendly and PDF

K.C.S.E Physics Q & A - MODEL 2016PP1QN14

27/7/2020

0 Comments

 

K.C.S.E Physics Q & A - MODEL 2016PP1QN14

a) Explain why it is advisable to use a pressure cooker for cooking at high altitudes 

b) Water of mass 3.0kg initially at 200C is heated in an electric kettle rated 3.0KW. The water is heated until it boils at 1000C. (Take specific heat capacity of water 4200Jkg1K-1. Heat capacity of the kettle = 450JK-1, Specific latent heat of vaporization of water = 2.3Mjkg-1)

Picture
Determine
(i) The heat absorbed by the water. 
ii)Heat absorbed by the electric kettle 
iii) The time taken for the water to boil 
iv) How much longer it will take to boil away all the water.
ANSWERS
​(a) At high altitudes pressure is low so boiling point is low
A pressure cooker increases pressure inside it which raises the boiling point hence faster cooking
Picture
0 Comments
Print Friendly and PDF

K.C.S.E Physics Q & A - MODEL 2015PP2QN18

24/7/2020

0 Comments

 

K.C.S.E Physics Q & A - MODEL 2015PP2QN18

​(a) Three resistors of resistance 2 ohms, 3 ohms and 4 ohms are to be connected to a cell such that they have the least effective resistance.
(I) Draw a circuit diagram to show how they can be connected to achieve this. 
(ii) Determine the least effective resistance of the three resistors. 
Picture
​(b) A real object of height 1 cm placed 50 mm from a converging lens forms a virtual image 100 mm from the lens.
(i) Determine the:
(I) focal length of the lens; 
(II) magnification.
(ii) On the grid provided draw to scale the ray diagram for the set up, to show how the image is formed. 
answers
Picture
Picture
Picture
0 Comments
Print Friendly and PDF
<<Previous
Forward>>



    CATEGORIES

    Categories

    All
    1995
    1996
    1997
    1998
    1999
    2000
    2001
    2002
    2003
    2004
    2005
    2006
    2007
    2008
    2009
    2010
    2011
    2012
    2013
    2014
    2015
    2016
    2017
    2018
    2019
    ARCHIMEDES PRINCIPLE
    BOILING AND MELTING POINTS
    Capacitance
    Capacitors And Capacitance
    Cathode Ray Oscilloscope
    Current Electricity
    CURVED SURFACES
    Definition Of Physics Terms
    Density
    ELECTRICITY
    ELECTROMAGNETIC INDUCTION
    ELECTROMAGNETIC RADIATIONS
    ELECTROMAGNETIC SPECTRUM
    ELECTRONICS
    ELECTROSCOPE
    ELECTROSTATICS
    Energy
    Equilibrium And Centre Of Gravity
    FLUID FLOW
    Force
    Form 1 Level
    Form 2 Level
    Form 3 Level
    Form 4 Level
    FREQUENCY
    GAS LAWS
    GRAVITY
    HEAT CAPACITY
    HEAT TRANSFER
    HOOKES’ LAW
    INFRARED RADIATIONS
    INTRODUCTION TO PHYSICS
    KCSE 1995
    LIGHT
    Linear Motion
    Magnetic Effect On Electric Current
    Magnetism
    MAINS ELECTRICITY
    Matter
    MEASUREMENT I
    Measurement II
    Newton's Law Of Motion
    Paper 1
    Paper 2
    Particulate Nature Of Matter
    PHOTOELECTRIC EFFECT
    POWER
    Pressure
    PROPAGATION OF LIGHT
    Pulley
    Quantity Of Heat
    Radioactivity
    Rectilinear Propagation Of Light
    Reflection Of Light
    Refraction Of Light
    Section I
    Section II
    SIMPLE CELL CIRCUITS
    Sinking And Floating
    SOUND
    TENSION FORCES
    Thermal Expansion
    THIN LENSES
    Turning Effect Of Force
    TURNING EFFECT OF MOMENTS
    Uniform Circular Motion
    Velocity Ratio
    Waves
    WORK
    WORK AND MACHINES
    Work-Energy-Power And Mechanics
    X RAYS
    X-RAYS

    Topics

    FORM I - PHYSICS SYLLABUS

    1. Introduction to Physics (4 Lessons)
    2. Measurements 1 (12 Lessons)
    3. Force (16 Lessons)
    4. Pressure (24 Lessons)
    5. Particulate Nature of Matter (12 Lessons)
    6. Thermal Expansion (12 Lessons)
    7. Heat Transfer
    8. Rectilinear Propagation of Light and Reflection at Plane Surface (16 Lessons)
    9. Electrostatics (12 Lessons)
    10. Cells and Simple Circuits (12 Lessons)

    FORM II - PHYSICS SYLLABUS

    1. Magnetism (12 Lessons)
    2. Measurements II (16 Lessons)
    3. Turning Effect of Force (10 Lessons)
    4. Equilibrium Centre of Gravity (12 Lessons)
    5. Reflection at Curved Surfaces (16 Lessons)
    6. Magnetic Effect of Electric Current (18 Lessons)
    7. Hooke's Law (8 Lessons)
    8. Waves (14 Lessons)
    9. Sound (12 Lessons)
    10. Fluid Flow  (14 Lessons)
    TOPICS

    FORM III - PHYSICS SYLLABUS

    1. Linear Motion (20 Lessons)
    2. Refraction of Light (20 Lessons)
    3. Laws of Motion (15 Lessons)
    4. Energy, Power and Machines (20 Lessons)
    5. Current Electricity (20 Lessons)
    6. Waves II(10 Lessons)
    7. Electrostatics II (15 Lessons)
    8. Heating Effect of Electric Current (10 Lessons)
    9. Quantity of Heat (20 Lessons)
    10. Gas Laws (15 Lessons)

    FORM IV - PHYSICS SYLLABUS

    1. Thin Lenses (20 Lessons)
    2. Uniform Circular Motion (10 Lessons)
    3. Floating and Sinking (15 Lessons)
    4. Electromagnetic Spectrum (15 Lessons)
    5. Electromagnetic Induction (20 Lessons)
    6. Mains Electricity (10 Lessons)
    7. Cathode Rays and Cathode Ray Tube (10 Lessons)
    8. X-rays (8 Lessons)
    9. Photoelectric Effect (15 Lessons)
    10. Radioactivity  (15 Lessons)
    11. Electronics (10 Lessons)
    ARCHIVES

    Archives

    October 2021
    October 2020
    July 2020
    May 2020
    December 2015
    November 2015
    October 2015
    September 2015

    RSS FEEDS

    RSS Feed

    AUTHOR

    M.A Nyamoti

    My passion is to see students pass using right methods and locally available resources. My emphasis is STEM courses


    HIGH SCHOOL EXAMINATIONS

    open

    PRIMARY SCHOOL RESOURCES 8-4-4

    open

    PRIMARY SCHOOL RESOURCES CBC

    open

    COLLEGE RESOURCES

    open

    FREE NOVELS

    open



ADS KEEPER HEADER
Print Friendly and PDF

Primary Resources
  • K.C.P.E Past Papers
  • ​Pri - Primary 1 Level
  • Pri  - Primary 2 Level
  • Grade 1
  • Grade 2
  • Grade 3
  • Grade 4
  • Standard 5
  • Standard 6
  • Standard 7
  • Standard 8
  • English
  • Kiswahili
  • Social Studies
  • Science
  • Mathematics
  • Kenya Sign Language
  • I.R.E
  • ​H.R.E
  • Notes
  • Termly Questions
  • Mocks
  • K.C.P.E Past Papers
College Resources
  • E.C.D.E
  • P.T.E
  • D.T.E
  • Technical Diploma
  • Technical Certificate
  • Business Diploma
  • Business Certificate
  • Higher Diploma
  • K.A.S.N.E.B Resources
  • K.M.T.C Resources
  • Varsity Resources
Secondary Resources
  • K.C.S.E Past Papers
  • Form 1
  • Form 2
  • Form 3
  • Form 4
  • Term 1
  • Term 2
  • Term 3
  • English
  • Geography
  • History
  • C.R.E
  • I.R.E
  • ​H.R.E
  • Home Science
  • Computer Studies
  • Business Studies
  • Agriculture
  • Chemistry
  • Biology
  • Physics
  • Mathematics ALT A
  • Mathematics ALT B
  • Kiswahili
  • French
  • Germany
  • Arabic
  • Aviation
  • Art & Design
  • Drawing & Design
  • Building & Construction
  • Metal Works
  • Wood Work
  • Music
  • Kenya Sign Language
  • Electricity
Other Useful Links
  • Academic Environment
  • How its Done
  • News and Opinions
  • Manyam Franchise Support
  • About
  • SITEMAP
  • FOCUS A365 SERIES
  • Membership Details (KCPE/KCSE)
  • Secondary Mocks
  • SYLLABUS
Contact Us
Manyam Franchise
P.O Box 1189 - 40200 Kisii
Tel: 0728 450 424
Tel: 0738 619 279
Tel: 0763 450 425
E-mail - sales@manyamfranchise.com
  • Home
    • JOBS IN KENYA AND ABROAD FOR KENYANS AND BEYOND
    • How its Done
    • KNEC Portal
    • Atika School Advanced Search
    • News and Opinions
    • Academic Environment
    • KNEC KCSE PROJECT INSTRUCTIONS
    • SITEMAP
    • About Us? >
      • About Us
      • Learn more about us
  • OUR PRODUCTS
    • All Categories >
      • Category
      • FREE NOVELS >
        • COURSE BOOKS
        • KCSE KISWAHILI SETBOOKS
        • Backed Up Files and Archives
        • FREE DOCUMENTS
        • PRIMARY 8-4-4 BASED RESOURCES
        • STANDARD 8 RESOURCES
        • HIGH SCHOOL RESOURCES >
          • Biology Paper 3 Exams
          • Secondary Examinations
        • PRIMARY CBC BASED RESOURCES
        • COLLEGE & VARSITY RESOURCES
    • PRIMARY RESOURCES CBC
    • PRIMARY RESOURCES 8-4-4
    • SECONDARY RESOURCES
    • NOTES & TUTORIALS
    • COLLEGE RESOURCES
    • NOVELS and OTHER BOOKS
  • EXAMINATIONS
    • PRIMARY EXAMS >
      • Primary Assignments and Random Exams
      • CBC
      • 8-4-4
      • STANDARD 8 PAST PAPERS 8-4-4 BASED
    • MOCKS AND JOINT EXAMS >
      • FORM 1 QUESTION PAPERS, ANSWERS AND MARKING SCHEMES COLLECTIONS
      • FORM 2 QUESTION PAPERS, ANSWERS AND MARKING SCHEMES COLLECTIONS
      • FORM 3 EXAMINATIONS, QUESTION PAPERS AND ANSWERS
      • MOCKS PAST EXAMS BY REGION
    • KCPE >
      • KCPE BY YEAR >
        • KCPE 2020 RESULTS, REPORTS, QUESTIONS AND ANSWERS
        • KCPE PAST PAPERS 2019 REPORTS, RESULTS, QUESTIONS AND ANSWERS
      • KCPE PAST PAPERS PER SUBJECT
      • KCPE PAST PAPERS AND ANSWERS
      • KCPE MATHEMATICS TOPICAL QUESTIONS FROM 1989 TO LAST YEAR
    • KCSE >
      • KCSE BY YEAR >
        • KNEC KCSE PAST PAPERS, MARKING SCHEMES, QUESTIONS & ANSWERS
      • KCSE BY SUBJECT >
        • KCSE PAST PAPERS BY SUBJECT
        • Free KCSE Past Papers Mathematics
        • Free KCSE Biology Questions and Answers
    • QUESTIONS & ANSWERS >
      • SECONDARY >
        • LANGUAGES >
          • A DOLL'S HOUSE BY HENRIK IBSEN RESOURCES
        • TECHNICALS >
          • COMPUTER STUDIES >
            • COMPUTER STUDIES Q & A
            • kcse computer studies paper 2 AND 3 Questions & Answers
          • BUSINESS STUDIES QUESTIONS & ANSWERS
          • KCSE AGRICULTURE TOPICAL QUESTIONS AND ANSWERS
          • KCSE HOME SCIENCE DIRECT QUESTIONS AND ANSWERS
        • SCIENCES >
          • KCSE Mathematics Topical Questions
          • KCSE Biology Topical Questions and Answers
          • CHEMISTRY TOPICAL QUESTIONS AND ANSWERS
          • KCSE Physics Topical Questions
          • KCSE physics Practical Sample Quiz
        • HUMANITIES >
          • ISLAMIC RELIGIOUS EDUCATION (IRE) QUESTIONS AND ANSWERS
          • KCSE History Topical Questions and Answers
          • GEOGRAPHY TOPICAL QUESTIONS AND ANSWERS
      • PRIMARY >
        • Standard 4-8 Mathematics Topical Questions from Mocks and KCPE
        • Std 6 Mathematics Notes
  • TUTORIALS
    • SECONDARY >
      • SCIENCES >
        • FOCUS MATHEMATICS TUTORIALS AND EXAMS FREE
        • KCSE BIOLOGY NOTES
        • FREE KCSE CHEMISTRY NOTES
        • KCSE PHYSICS NOTES, AUDIOVISUALS AND MORE
      • LANGUAGES >
        • ENGLISH >
          • English KCSE Set Books
          • ENGLISH POETRY QUESTIONS WITH ANSWERS FOR K.C.S.E CANDIDATES
          • ENGLISH GRAMMAR #KCSE
        • CHOZI LA HERI - MWONGOZO
        • KIGOGO - MWONGOZO
        • USHAIRI MASWALI NA MAJIBU
        • MASWALI NA MAJIBU YA TUMBO LISILOSHIBA
        • KCSE Kiswahili Fasihi
      • TECHNICALS >
        • HOME SCIENCE NOTES
        • KCSE BUSINESS STUDIES NOTES
        • COMPUTER STUDIES NOTES LATEST
        • kcse Computer Studies Notes
        • KCSE AGRICULTURE NOTES, SYLLABUS, QUESTIONS, ANSWERS, SCHEMES OF WORK AND OTHERS
      • HUMANITIES >
        • KCSE History Notes Form 1 to 4
        • FREE KCSE CRE NOTES
        • KCSE GEOGRAPHY NOTES
        • IRE NOTES, AUDIOVISUAL, QUESTIONS AND ANSWERS
    • PRIMARY >
      • NOTES >
        • KISWAHILI
        • SOCIAL STUDIES >
          • STANDARD 4: SOCIAL STUDIES
        • SCIENCE
        • ENGLISH >
          • KCPE and Primary Level Compositions
        • MATHEMATICS >
          • KCPE Mathematics Notes
      • EXAMINATIONS >
        • DecaTurbo Online Series Examinations
        • CBC Kiswahili
        • FOCUS A365 SERIES K.C.P.E EXAMINATIONS FOR PRIMARY
        • Standard 8 (std) English Topical Questions
    • Other Supportive Documents >
      • Free Schemes of Work
      • SYLLABUS >
        • Primary 8-4-4 based Syllabus, Objectives and Lessons
        • Primary Mathematics Syllabus
      • MASOMO VIDEOS
  • CURRICULUM
    • NEW CURRICULUM DESIGNS >
      • PRIMARY >
        • PRE PRIMARY ONE CURRICULUM WITH SYLLABUS
        • PRE PRIMARY TWO CURRICULUM WITH SYLLABUS
      • SECONDARY >
        • KNEC KCSE SYLLABUS AND COURSE OUTLINES
      • COLLEGE >
        • Regulations for the TIVET Craft and Diploma Business Examinations
  • HIGH INSTITUTIONS
    • EXAMINATIONS >
      • College and Varsity Past Papers online
    • TUTORIALS >
      • COLLEGE AND UNIVERSITY NOTES AND TUTORIALS
  • CUSTOMER CARE
    • PRICING
    • Contact
    • Help & Support
    • DONATE
    • MPESA FORM
  • BLOGS
    • ENGLISH - EKEGUSII DICTIONARY
  • MEMBERSHIP RESOURCES
    • Assignments and Random Exams
    • TERM 3 2021 PRIMARY PAST REVISION PAPERS
    • SECONDARY EXAMINATIONS
    • Search Free Documents (PDF)
  • Archived Pages
    • C.R.E (CRE) QUESTION AND ANSWERS
    • TOP SECONDARY EXAMS ALL SUBJECTS