K.C.S.E Physics Q & A - MODEL 2016PP2QN14
​Figure 6 shows a simple electric bell circuit
​(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.
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K.C.S.E Physics Q & A - MODEL 2016PP2QN13
​A boy standing in front of a cliff blows a whistle and hears the echo after 0.5s. He then moves 17 metres further away from the cliff and blows
the whistle again. He now hears the echo after 0.6s. Determine the speed of the sound. K.C.S.E Physics Q & A - MODEL 2016PP2QN05
​State the reason why a convex mirror is preferred over a plane mirror for use as a driving mirror.
answer
K.C.S.E Physics Q & A - MODEL 2016PP2QN02
.An un-magnetized steel rod is clamped facing North-South direction and then hammered repeatedly for some time. When tested, it is found to be magnetized. Explain this observation. ​
answer
State why it is easier to separate water into drops than to separate a solid into smaller pieces27/7/2020
K.C.S.E Physics Q & A - MODEL 2016PP1QN12
State why it is easier to separate water into drops than to separate a solid into smaller pieces
answer
K.C.S.E Physics Q & A - MODEL 2016PP1QN11
Figure 9 shows a uniform cardboard in the shape of parallelogra
​Locate the centre of gravity of the cardboard
K.C.S.E Physics Q & A - MODEL 2016PP1QN09
​The three springs shown in figure 5 are identical and have negligible weight. The extension produced on the system of springs is 20 cm.
​Determine the constant of each spring
K.C.S.E Physics Q & A - MODEL 2016PP1QN08
(a)An aeroplane is moving horizontally through still air at a uniform speed. It is observed that when the speed of the plane is increased, its height above the ground increases. State the reason for this observation.
​(b)Figure 6 shows parts A, B and C of a glass tube.
​State with a reason the part of the tube in which the pressure will be lowest when air is blown through the tube from A towards C.
answers
​(a) Increase in the speed of the plane decreases the pressure of air above it while the pressure below it remains high. This leads to a resultant upward force
(b) Point B The velocity is high at this point hence pressure decreases K.C.S.E Physics Q & A - MODEL 2016PP1QN07
​Figure 5 shows an aluminium tube tightly stuck in a steel tube.
Explain how the two tubes can be separated by applying a temperature change at the same junction given that aluminum expands more than steel for the same temperature rise.
answer
K.C.S.E Physics Q & A - MODEL 2016PP1QN06
Figure 2 shows a uniform light bar resting horizontally on corks floating on water in two beakers A and B.
​Explain why the bar tilts towards side A when equal amount of heat is supplied to each beaker
answer
K.C.S.E Physics Q & A - MODEL 2016PP1QN05
Fig. 3 shows a hot water bath with metal rods inserted through one of its sides. Some wax is fixed at the end of each rod. Use this information to answer question 5(a) and 5(b).
​What property of metals could be tested using this set-up?
answer
K.C.S.E Physics Q & A - MODEL 2016PP1QN03
When a drop of oleic acid of known volume is dropped on the surface of water in a large trough, it spreads out to form a large circular patch.
State one assumption made when the size of the molecule of oleic acid is estimated by determining the area of the patch. ​
answer
K.C.S.E Physics Q & A - MODEL 2015PP2QN09
​A ship in an ocean sends out an ultra sound whose echo is received after 3 seconds. If the wavelength of the ultra sound in water is 7.5 cm, and the frequency of the transmitter is 20 kHz, determine the depth of the ocean.
K.C.S.E Physics Q & A - MODEL 2015PP2QN06
State two ways in which the strength of an electromagnet can be increased.
answer
State the reason why a convex mirror is preferred over a plane mirror for use as a driving mirror.24/7/2020
K.C.S.E Physics Q & A - MODEL 2015PP2QN05
State the reason why a convex mirror is preferred over a plane mirror for use as a driving mirror.
answer
K.C.S.E Physics Q & A - MODEL 2015PP2QN04
​Figure 2 shows a soft iron bar AB placed in a coil near a freely suspended magnet.
​Explain the observation made when the switch is closed.
answer
K.C.S.E Physics Q & A - MODEL 2015PP2QN01
​ Figure 1 shows three mirrors arranged at right angles to each other. A ray of light is incident on one of the mirrors.
​Complete the diagram to show the path of the ray after reflection on each of the mirrors.
K.C.S.E Physics Q & A - MODEL 2015PP1QN12
​Figure 6 shows a glass tube with water fitted with two identical thermometers A and B.
It is heated as shown
​State with a reason which one of the two thermometers shows a higher temperature.
ANSWER
K.C.S.E Physics Q & A - MODEL 2015PP1QN11
A person carrying a heavy luggage using one hand leans away from the luggage. State the reason for this.
ANSWER
K.C.S.E Physics Q & A - MODEL 2015PP1QN10
​A balloon is filled with hydrogen gas and then released into the air. It is observed that as it rises higher into the air it expands. Explain why it expands.
ANSWER
K.C.S.E Physics Q & A - MODEL 2015PP1QN09
​Figure 5 shows air flowing through a pipe of different cross-sectional areas. Two pipes A and B are dipped into water.
​Explain the cause of the difference in the levels of water in the pipes A and B.
ANSWER
K.C.S.E Physics Q & A - MODEL 2015PP1QN08
​Figure 4 shows a uniform metal rod balanced at it’s centre by different forces.
​Determine the value of T.
K.C.S.E Physics Q & A - MODEL 2015PP1QN07
​Two containers A and B of equal dimensions but different metals are fitted with identical glass casings. The two containers initially at the same temperature are simultaneously filled with boiling water. It is observed that the glass casing on A breaks earlier than the one on B.
​Explain this observation.
ANSWER
K.C.S.E Physics Q & A - MODEL 2015PP1QN06
​Figure 3 shows the arrangement of molecules in the three states of matter.
​(a) Name the process represented by the arrow.
(b) State the reason for the arrangement of molecules in state 3.
ANSWER
​(a) - freezing
(b) - The intermolecular forces are weaker K.C.S.E Physics Q & A - MODEL 2015PP1QN03
​A spring extends by 6 cm when supporting a mass of 0.06 kg on earth. When the spring is used to support the same mass on the moon, it extends by 1 cm. Determine the moon’s gravitational strength. (Take gravitational field strength on earth as 10 Nk/g)
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