K.C.S.E Physics Q & A - MODEL 2002PP1QN34
Light of a certain wavelength strikes the surface of a metal. State what determines the maximum kinetic energy of the electron emitted.
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K.C.S.E Physics Q & A - MODEL 2002PP1QN33
​Fig. 15 shows a wire XY placed in a magnetic field.
​State the direction in which the wire must be moved for the current to move in the direction shown.
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K.C.S.E Physics Q & A - MODEL 2002PP1QN32
State the property of X-rays, which makes it possible to detect cracks in bones.
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K.C.S.E Physics Q & A - MODEL 2002PP1QN31
A nucleus is represents by 10742x. State the number of neutrons in the nucleus.
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K.C.S.E Physics Q & A - MODEL 2002PP1QN30
The following table shows electrical appliances to be used in a house. The electrical rating for each appliance is shown. The following fuses are available, 5A, 15A, 30A and 45A.
​Determine which one of the fuses is suitable for the house.
K.C.S.E Physics Q & A - MODEL 2002PP1QN29
​ The circuit figure 14 represents a simple radio receiver.
​On the axes provided, sketch the waveform observed on the CRO for the signal shown.
K.C.S.E Physics Q & A - MODEL 2002PP1QN28
​Fig. 13 represents an object O placed 10cm in front of a diverging lens is the focal point of the lens.
Draw rays to locate the position of the image. Determine the image distance.
K.C.S.E Physics Q & A - MODEL 2002PP1QN27
Cobalt 60 is a radio isotope that has a half – life of 5.25 years. What fraction of the original atoms in a sample will remain after 21 years?
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K.C.S.E Physics Q & A - MODEL 2002PP1QN26
​A small object moving in a horizontal circle of radius 0.2m makes 8 revolutions per second.Determine its centripetal acceleration.
K.C.S.E Physics Q & A - MODEL 2002PP1QN25A block of glass of mass 250g floats in mercury. What volume of glass lies under the surface of the mercury? (Density of mercury is 13.6 x 103 kgm-3).K.C.S.E Physics Q & A - MODEL 2002PP1QN24
​The audible frequency range for a certain person is 30 Hz and 16,500 Hz. Determine the largest wavelength of sound in air the person can detect.(Speed of sound in air = 330m/s)
K.C.S.E Physics Q & A - MODEL 2002PP1QN23
​Fig. 12 shows water waves incident on an aperture AB.
​On the same diagram, sketch the waves after going through the aperture.
K.C.S.E Physics Q & A - MODEL 2002PP1QN22
On the axes provided sketch the P-V graph for a gas obeying Boyle's law.
K.C.S.E Physics Q & A - MODEL 2002PP1QN21
​Fig. 11 shows part of the circuit containing tow capacitors of 2 uF and 3uF respectively.
​Determine the p.d across AB given that the total charge in the capacitors is 1x10-4 Coulombs.
K.C.S.E Physics Q & A - MODEL 2002PP1QN20
A high jumper usually lands on thick soft mattress. Explain how the mattress helps in reducing the force of impact.
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K.C.S.E Physics Q & A - MODEL 2002PP1QN19
​An immersion heater rated 90W is placed is a liquid of mass 2kg. When the heater is switched on for 15 minutes the temperature of the liquid rises form 20°C to 30°C .Determine the specific heat capacity of the liquid. (Assume no heat losses)
K.C.S.E Physics Q & A - MODEL 2002PP1QN18
An electric bulb with a filament of resistance 480ohms is connected to a 240V mains supply.
Determine the energy dissipated in 2 minutes
K.C.S.E Physics Q & A - MODEL 2002PP1QN17
Name two factors other than tension, which determine the frequency of sound form stretched wire at room temperature.
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K.C.S.E Physics Q & A - MODEL 2002PP1QN16
The chart below shows an arrangement of different parts of the electromagnetic spectrum
​Name the radiation represented by A.
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K.C.S.E Physics Q & A - MODEL 2002PP1QN15
​Fig. 10 shows how the potential energy, (P.E) of a ball thrown vertically upwards, varies with height.
On the same axes, plot a graph of the kinetic energy of the ball.
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K.C.S.E Physics Q & A - MODEL 2002PP1QN14
​Fig. 9 shows a speed – time graph for the journey of a motorcar.
​Determine the distance the car travels in the first 40 seconds.
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K.C.S.E Physics Q & A - MODEL 2002PP1QN13
Fig. 8 shows two parallel thick copper conductors connected to a D.C. power supply. A rider made from a thin copper wire is placed on the conductors.
State and explain what is observed on the rider when the switch is closed.
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K.C.S.E Physics Q & A - MODEL 2002PP1QN12
​Fig. 7 shows a non – uniform log of mass 100kg balanced on the pivot by a 2kg mass placed as shown.
Determine the distance of the center of gravity of the log from the pivot.
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K.C.S.E Physics Q & A - MODEL 2002PP1QN11
​Fig. 6 shows a soft iron placed between poles of two magnets.
​Sketch the magnetic field pattern.
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K.C.S.E Physics Q & A - MODEL 2002PP1QN10
Fig. 5 shows a wire A and a spring B made of the same material. The thickness of the wire is the same in the both cases. Masses are added on each at the same intervals and the extension noted each time.
On the same axes provided, sketch the graphs of extension against load for each. (hookers law is obeyed.)
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