K.C.S.E Physics Q & A - MODEL 1996PP1QN13
Figure 4 shows tow parallel current conductors A and B placed close to each other. The direction of the current is into the plane of the paper.
On the same figure; (i) Sketch the magnetic field pattern (ii) Indicate the force F due to the current on each conductor
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K.C.S.E Physics Q & A - MODEL 1996PP1QN10
The pitch of the note produced by a wire depends on the tension in the wire. State the other factor that effects the pitch
ANSWERS
K.C.S.E Physics Q & A - MODEL 1996PP1QN12
​Thermistor, TH, is connected in parallel with a bulb as shown in figure 3. The bulb is lit. When the thermistor is steadily heated the brightness of the bulb reduces. Explain this observation
ANSWERS
K.C.S.E Physics Q & A - MODEL 1996PP1QN11
Name two forces that determine the shape of liquid drop on the solid surface.
ANSWERS
K.C.S.E Physics Q & A - MODEL 1996PP1QN09
State the law of electrostatic charges
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K.C.S.E Physics Q & A - MODEL 1996PP1QN08
A vertical object placed on a bench is observed to have three shadows of different sharpness, in different directions. Explain this observation
answers
K.C.S.E Physics Q & A - MODEL 1996PP1QN07
Give a reason why heat transfer by radiation is faster than heat transfer by conduction
answers
K.C.S.E Physics Q & A - MODEL 1996PP1QN06
Give a reason why a concrete beam reinforced with steel does not crack when subjected to changes in temperature
answers
K.C.S.E Physics Q & A - MODEL 1996PP1QN05
A small nail may pierce an inflated car tyre and remain there without pressure reduction in the tyre. Explain this observation
answers
(i) Rubber is elastic and when a nail pushed through it stretches and grips the nail firmly without allowing air leakage
(ii) Valve effect pressure from inside causes tyre rubber to press firmly on the nail K.C.S.E Physics Q & A - MODEL 1996PP1QN04Figure 2 shows a U tube containing two liquids L1 and L2 of densities 0.8 g cm-3 and 1.8 cm-3respectively in equilibrium. Given that h2 = 8 cm determine the value of h1
K.C.S.E Physics Q & A - MODEL 1996PP1QN03
State two factors that should be controlled in manufacturing a cylindrical container of uniform thickness, which should normally be in a standing position?
ANSWERS
K.C.S.E Physics Q & A - MODEL 1996PP1QN02
What measurable quality is associated with colors of light?
ANSWERS
K.C.S.E Physics Q & A - MODEL 1996PP1QN01
The micrometer screw gauge represented by figure 1 has thimble scale of 50 divisions
What is the reading shown
K.C.S.E Physics Q & A - MODEL 1995PP1QN36
Explain with the aid of a labeled ray diagram the wide field of view of a convex mirrorK.C.S.E Physics Q & A - MODEL 1995PP1QN35
Figure 10 represent a signal being fed into a demodulator of a radio receiver. Sketch in the space provided, the output signal
K.C.S.E Physics Q & A - MODEL 1995PP1QN34
State two variables that must be controlled in an experiment for comparing the thermal conductivities of different metal rods of the same diameter
ANSWERS
K.C.S.E Physics Q & A - MODEL 1995PP1QN3
What is meant by the centre of gravity of a body?
ANSWERS
K.C.S.E Physics Q & A - MODEL 1995PP1QN32
A radioactive carbon 14 decay to Nitrogen by beta emission as below
Determine the values of x and y in the equation
K.N.E.C ANSWERS
K.C.S.E Physics Q & A - MODEL 1995PP1QN31
State a characteristic of sound, which is determined by overtone
K.N.E.C MARKING SCHEME
K.C.S.E Physics Q & A - MODEL 1995PP1QN29&30
In an experiment on photo- electricity using metal X, the graph shown in figure 9 was obtained. Use the graph to answer questions 29 and 30.
(a)Determine the minimum frequency f0 below which no photoelectric emission occurs
(b) Sketch on the same axes, a graph for a metal, Y hose work function is higher than metal X
K.C.S.E Physics Q & A - MODEL 1995PP1QN28
Name the metal used to shields X – rays operators from the radiation. Give a reason why it is used.
K.N.E.C MARKING SCHEME
K.C.S.E Physics Q & A - MODEL 1995PP1QN27
An electron in an excited atom falls from energy levels E2 to energy level E1. Write an equation relating the energy change to the frequency f, of the radiation emitted. Explain why new symbols used.
K.C.S.E Physics Q & A - MODEL 1995PP1QN26
The table below shows the type of radiation, detection methods and uses of electromagnetic radiations. Complete the table.
K.C.S.E Physics Q & A - MODEL 1995PP1QN25
Name the property of light that shows that it is a transverse wave
K.N.E.C MARKING SCHEME
K.C.S.E Physics Q & A - MODEL 1995PP1QN24
Figure 8 represents two parallel plates of a capacitor separated by a distance d. Each plate has an area of A square unit
Suggest two adjustments that can be made so as to reduce the effective capacitance
KNEC ANSWERS
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