K.C.S.E Physics Q & A - MODEL 2004PP1QN19
State the difference between mechanical and electromagnetic waves.
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K.C.S.E Physics Q & A - MODEL 2004PP1QN14
​The system in figure 9 is in equilibrium.
Determine the weight if the bar.
K.C.S.E Physics Q & A - MODEL 2004PP1QN12&13
​Figure 8 shows a current-carrying coil in a magnetic field.
Use the information on the figure to answer question 12 and 13.
Mark on figure 8 the direction of the forces acting on the sides of the coil labeled State two ways of increasing the force on the coil. K.C.S.E Physics Q & A - MODEL 2004PP1QN11
​ Figure 7 shows the poles of two magnets close together.
​Figure 8 shows a current-carrying coil in a magnetic field.
K.C.S.E Physics Q & A - MODEL 2004PP1QN03
​ Fig 3 shows a rectangular block of wood with a hollow section (inside) at the position shown.
The block is resting on a Horizontal bench
​(i) State the effected on the stability of the block when the hollow section is filled with water.
ii) Explain your answer in (i) above.
answers
i)Stability reduced/Lower /less stable
(ii)Upper section heavier/hollow section becomes heavy/more massive top Raising the c.o.g of the block. K.C.S.E Physics Q & A - MODEL 2004PP1QN02
​The system in figure 2 is in equilibrium at room temperature.
The system is taken outside where the temperature is 10°c higher for sometime.
Explain why it tips to the right immediately it is returned to the room
answer
K.C.S.E Physics Q & A - MODEL 2004PP1QN01
​Figure 1 shows a micrometer screw gauge being used to measure the diameter of a ball bearing.
A magnified portion of the scale is shown.
​Record the diameter of the ball bearing
answer
K.C.S.E Physics Q & A - MODEL 2003PP2QN07
a) Fig. 8. shows an experimental set up consisting of a mounted lens. L, a screen, s, a meter rule and a candle.
​(i) Describe how the set-up may be used to determine the focal length, f, of the lens.
(ii) State the reason why the set-up would not work if the lens were replaced with a diverging lens. (b) The graph in figure 9. shows the relationship between 1/r and 1/v for converging lens where u and v are the object and image distances respectively.
​For the graph, determine the focal length, f of lens.
(c) An object placed 15cm from a convex lens is magnified two times. Determine the focal length of the lens. K.C.S.E Physics Q & A - MODEL 2003PP1QN36
Figure 19 shows a pith ball placed in a flask. When a jet of air is blown over the mouth of the flask as shown, the pith ball is observed to rise form the botto
​Explain this observation
ANSWER
K.C.S.E Physics Q & A - MODEL 2003PP1QN29
​Figure 16 (a) and (b) show a convex mirror and a plane mirror of equal aperture.
By sketching a pair of incident and reflected rays for each (a) and (b) show how the convex mirror provides to the eye, a wider field of view than the plane mirror.
K.C.S.E Physics Q & A - MODEL 2003PP1QN21
A girl standing 600m away from a cliff bangs two pieces of wood together and hears and echo 3.5 seconds later. Determine the speed of sound in air at that place.​
K.C.S.E Physics Q & A - MODEL 2003PP1QN16
Figure 10 (draw to scale) shows an image I formed by a diverging lens, L.
​On the same diagram, draw appropriate rays to locate the position of object. Determine the object distance.
K.C.S.E Physics Q & A - MODEL 2003PP1QN14
​Figure 9 shows a uniform bar in equilibrium under the action of two forces.
Determine the value of F
K.C.S.E Physics Q & A - MODEL 2003PP1QN13
Give a reason why the core of the electromagnet of an electric bell is made of soft iron and not steel.
answers
K.C.S.E Physics Q & A - MODEL 2003PP1QN12
​ Figure 8 shows a bar of soft iron placed near a magnet.
On the same diagram, sketch the magnetic field pattern due to the set up
K.C.S.E Physics Q & A - MODEL 2003PP1QN05
Explain the cause of random motion of smoke particles as observed in Brownian motion experiment using a smoke cell.
answer
K.C.S.E Physics Q & A - MODEL 2003PP1QN01
Figure 1 shows a measuring cylinder containing some liquid
Another 5cm3 of the liquid is added into the cylinder. Indicate on the diagram the new level of the liquid.
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.
answer
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 2002PP1QN17
Name two factors other than tension, which determine the frequency of sound form stretched wire at room temperature.
answers
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.
answer
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.
answer
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.
answer
K.C.S.E Physics Q & A - MODEL 2002PP1QN07
​An electric heater is placed at equal distances from two similar metal cans A and B filled with water at room temperature. The outer surface of can is shiny while that of can B is dull black. State with reasons which can will be at a higher temperature after the heater is switched on for some time.
ANSWER
K.C.S.E Physics Q & A - MODEL 2002PP1QN06
When an inflated balloon is placed at equal in a refrigerator it is noted that its volume reduces. Use the kinetic theory of gases to explain this observation.
answers
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