K.C.S.E Physics Q & A - MODEL 1999PP1QN17
Figure 12 shows how displacement varies with time as a wave passes a fixed point
Determine the frequency of the waves
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K.C.S.E Physics Q & A - MODEL 1999PP1QN16
Figure 11 is a graph which shows how the vertical height through which a machine raises a mass 20kg varies with time.
Determine the power output of the machine after 40 seconds.
K.C.S.E Physics Q & A - MODEL 1999PP1QN15An industrial trolley of mass 20kg carrying a mass of 50kg is acted on by a constant force. The trolley moves along a horizontal smooth surface with an acceleration of 0.5ms-2 . Determine the acceleration of the trolley after the mass falls off.K.C.S.E Physics Q & A - MODEL 1999PP1QN14
Determine the moment of the couple shown in figure 10.
K.C.S.E Physics Q & A - MODEL 1999PP1QN13
Figure 9 shows a wire carrying a current whose direction is into the paper.
The wire is placed in a magnetic field.
Indicate on the figure the direction of the force acting on the wire.
K.C.S.E Physics Q & A - MODEL 1999PP1QN12
How can it be shown that the strength of a magnet is concentrated at the poles?
ANSWERS
K.C.S.E Physics Q & A - MODEL 1999PP1QN11
A wire fixed at one end extends by 4mm when a load of 20N is suspended from the other end. Determine the load that would cause an extension of 1.5 mm on the wire (assume elastic limit is not exceeded)
K.C.S.E Physics Q & A - MODEL 1999PP1QN10
Determine the ammeter reading when a p.d of 3.0 volts is applied across Pq in figure 8.
K.C.S.E Physics Q & A - MODEL 1999PP1QN09
Figure 7 shows a sharp pin fixed on a cap of leaf electroscope. The electroscope is highly charged and then left for sometime.
Explain why the leaf collapses
ANSWER
K.C.S.E Physics Q & A - MODEL 1999PP1QN08
Figure 6 shows a ray of light incident on plane mirror at point O.
The mirror is rotated clockwise through an angle 300 about an axis perpendicular to the paper. Determine the angle through which the reflected ray rotated.
K.C.S.E Physics Q & A - MODEL 1999PP1QN07
In an experiment to study the atoms of gold, a beam of alpha- particles was directed onto a thin sheet of gold. The following observations were made:
(i) Majority of the particles went straight through undeflected (ii) A few particles deflected through varying angles up to 180. K.C.S.E Physics Q & A - MODEL 1999PP1QN06
Figure 5 shows a bimetallic strip at room temperature. Brass expands more than invar when heated equally.
Sketch the bimetallic strip after being cooled several degrees below room temperature.
K.C.S.E Physics Q & A - MODEL 1999PP1QN05
Fig. 4 shows a capillary tube placed in though of mercury.
Give a reason why the level of mercury in the capillary tube is lower than in the beaker.
ANSWERS
K.C.S.E Physics Q & A - MODEL 1999PP1QN04
A vacuum pump was used to pump out air from the glass tube immersed in liquids as shown in figure3.
After sometime the level of paranum rose to position A. Mark 1, the corresponding position for the water level. Give a reason for your answer.
K.C.S.E Physics Q & A - MODEL 1999PP1QN03
State how the position of the centre of gravity of a body in stable equilibrium changes to that in the rest position when the body is slightly tilted and then released.
ANSWERS
K.C.S.E Physics Q & A - MODEL 1999PP1QN02
Figure 2 shows forces f1 and F1 and F2 acting on a meter rule such that it is in equilibrium.
Mark on the figure a third force F3 acting on the rule such that it is in equilibrium maintained.
K.C.S.E Physics Q & A - MODEL 1999PP1QN01
What is the reading on the vernier calipers shown in figure 1?
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