K.C.S.E Physics Q & A - MODEL 2004PP1QN33
State the difference between hard X-ray and soft X-rays.
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K.C.S.E Physics Q & A - MODEL 2004PP1QN30
​Fig. 15 shows water waves of different wavelengths incidentical apertures A and B.
​Complete the diagram to show the pattern of the waves beyond the aperture in each case
K.C.S.E Physics Q & A - MODEL 2004PP1QN27
​ A balloon is filled with air to volume of 200ml at a temperature of 293K. Determine the volume when the temperature rises to 353K at the voltmeter, V.
K.C.S.E Physics Q & A - MODEL 2004PP1QN26
​The capacitors in the circuit in fig 14 are identical and initially uncharged.
Switch S1 is closed while switch s2 remains open. After sometime, switch s1 is opened and switch s2 closed. Determine the final reading of the voltmeter, V
K.C.S.E Physics Q & A - MODEL 2004PP1QN25
​ A trolley is moving at a uniform speed along a track. A piece of plasticine is dropped on the trolley and sticks on it.
Explain why the trolley slows down.
answer
K.C.S.E Physics Q & A - MODEL 2004PP1QN24
​Figure 13 shows a coin placed in a large empty container. And observer looking into the container from the position shown is unable to see the coin
​Sketch two rays from a point on the coin to show how the observer is able to see the image of the coin after the container if filled with water.
K.C.S.E Physics Q & A - MODEL 2004PP1QN18
​A body of mass 60kg is pulled at a uniform velocity up smooth inclined surface as shown in Figure 1
​If the distance moves along the incline is 4.0m, determine work done by the force F.
K.C.S.E Physics Q & A - MODEL 2004PP1QN17
​The graph below shows how the velocity varies with time for a body thrown vertically upwards.
​Determine the total distance moved by the body
K.C.S.E Physics Q & A - MODEL 2004PP1QN07Figure 5 shows two mirrors inclined at an angle of 600 to each other. A ray of light is shown
Sketch the same diagram, the path of the ray until it leaves the two mirrors. Indicate the angles at each reflection.
answer
K.C.S.E Physics Q & A - MODEL 2003PP2QN06
​a) Figure 6 shows a simple set up for pressure law apparatus.
​Describe how the apparatus may be used to verify pressure law. Initial reading of pressure and temperatures are recorded.
b) The graph in fig 7 shows the relationship between the pressure and temperature for a fixed mass of an ideal gas at a constant volume.
​(i) Given that the relationship between pressure, p, and temperature, T n Kelvin is of the form P = kT+ C where k and C are constants, determine from the graph, values of k and c.
(ii) Why would it be impossible for pressure of the gas to reduced to zero in practice? (c) A gas is put into a container of fixed volume at a pressure of 2.1 x 105 N/m2 and temperature 27C. the gas is then heated temperature of 327C. Determine the new pressure. K.C.S.E Physics Q & A - MODEL 2003PP2QN05
a) States what is meant by electromotive force (em.f) of battery.
b) The graph in figure 5 shows the terminal voltage, V, of a certain battery varies with the current, I, being drawn from the battery.
​(i) Write an expression relating the e.m.f. E, terminal voltage, V, current, I and the internal resistance, r, of the battery for the circuit drawn in
(i) above. (iii) From the graph determine the; I internal resistance, r, of the battery. (C) A galvanometer of resistance 10ohms gives a full-scale deflection when a current of 0.03A flows through it. Determine the resistance of the resistor, which would be required to convert the galvanometer to an ammeter reading up to 3.0a K.C.S.E Physics Q & A - MODEL 2003PP2QN04
​a) Figure 3 shows a transverse wave traveling along x-axis.
​(i) Determine the:
I Wavelength of the wave II Amplitude of the wave. (ii) If the time taken by the wave to move from 0 to A is 0.09 seconds, determine the: I Frequency of the wave. II Speed of the wave b) Figure 4 shows a Geiger muller (GM) tub
(i) Give the reason why the mica window is made thin.
(ii) Explain how the radiation entering the tube through the window is detected by the tube. (iii) What is the purpose of the halogen vapour K.C.S.E Physics Q & A - MODEL 2003PP2QN03
​a) State what is meant by the term "specific latent heat of vaporization"
b) In an experiment to determine the specific latent heat of vaporization of water, steam at 100C was passed into water contained in a well-lagged copper calorimeter. The following measurements were made; (i) Determine the: I Mass of condensed steam II Heat gained by water Heat gained by calorimeter
​(ii) Given that L is the specific latent heat of vaporization of steam,
I write an expression for the heat given out steam. II Determine the value of L. K.C.S.E Physics Q & A - MODEL 2003PP2QN02
​a) A crane lifts a load of 200kg through a vertical distance of 3.0m in 6 seconds.
Determine: (i) Work done (ii) Power development by the crane. (iii) Efficiency of the crane given that it is operated by an electric motor rated 12.5kW. (b) A child of mass 20kg sits on a swing of length 4m and swings through a vertical height of 0.9m as shown in figure 2.
​Determine:
(i) Speed of the child when passing through the lowest point. (ii) Force exerted on the child by the seat of swing when passing through the lowest point. K.C.S.E Physics Q & A - MODEL 2003PP2QN01
​a. Fig 1 shows the displacement time graph of the motion of a particle
State the nature of the motion of the particle between:
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