K.C.S.E Physics Q & A - MODEL 2011PP1QN01
Figure 1 shows a lorry moving on an inclined section of a straight road. At the back is a chain hanging from a point on a horizontal axis through the centre of gravity of the lorry.​
​State with a reason whether the lorry is stable or not stable.
ANSWER
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K.C.S.E Physics Q & A - MODEL 2010PP2QN16
​(a) Figure 10, shows an object placed in front of a converging lens of focal length 50mm
​(i) On the same figure, draw a ray diagram showing the location of the image.
(ii) Use the ray diagram to determine the: (1) image distance; (II) magnification. (iii) State the adjustment that should be done to obtain a larger virtual image using the same lens. (iv) State one application of the arrangement in figure 10. (b) Figure 11, shows a pin 60 mm long placed along the principal axis of the lens used in part (a). The near end of the pin is 80 mm from the lens.
​Determine the length of the image.
K.C.S.E Physics Q & A - MODEL 2010PP2QN05
​Figure 4, shows a bright electric lamp placed behind a screen which has a hole covered with a wire gauze. A concave mirror of focal length 25cm is placed in front of the screen. The position of the mirror is adjusted until a sharp image of the gauze is formed on the screen.
​Determine the distance between the mirror and the screen.
answer
K.C.S.E Physics Q & A - MODEL 2010PP2QN03
​Figure 3, shows a diagram of a current-carrying wire wound on a U-shaped soft iron.
​Draw the magnetic field pattern around P and Q.
K.C.S.E Physics Q & A - MODEL 2010PP2QN02
​Figure 2(a), shows a magnetic compass placed under a horizontal wire XV
​A large current is passed from X to Y. Draw the final position of the magnetic compass needle in figure 2b.
K.C.S.E Physics Q & A - MODEL 2010PP2QN01
​Figure 1, shows a ray of light incident on a plane mirror at O. The mirror is then rotated anticlockwise about O from position M1 to position M2 through an angle of 10°. The final reflected ray is OC
​Determine the angle of deviation BOC
K.C.S.E Physics Q & A - MODEL 2010PP1QN14
​Figure 6 shows an athlete lifting weights while standing with the feet apart
​Explain why standing with the feet apart improves the athletes' stability.
answer
K.C.S.E Physics Q & A - MODEL 2010PP1QN09
​When a drop of oleic acid of known volume is dropped on the surface of water in a large trough, it spreads out to form a large circular patch. State one assumption made when the size of the molecule of oleic acid is estimated by determining the area of the patch.
answer
K.C.S.E Physics Q & A - MODEL 2010PP1QN07
​Figure 4 shows a horizontal tube with two vertical tubes x and y. Water flows through the horizontal tube from right to left. The water level in tube x is higher than water level in tube y.
​Explain this observation.
answer
K.C.S.E Physics Q & A - MODEL 2010PP1QN06
​Figure 3 shows a uniform metre rule pivoted at the 30cm mark. It is balanced by a weight of 2N suspended at the 5cm mark.
​Determine the weight of the metre rule.
K.C.S.E Physics Q & A - MODEL 2010PP1QN05
When a liquid is heated in a glass flask, its level at first falls, then rises. Explain this observation.
answer
K.C.S.E Physics Q & A - MODEL 2010PP1QN04
​A paper windmill in a horizontal axis was placed above a candle as shown in figure 2.
When the candle was lit the paper windmill begun to rotate.
Explain this observation.
answer
K.C.S.E Physics Q & A - MODEL 2010PP1QN03
Some water in a tin can was boiled for some time. The tin can was then sealed and cooled. After some time it collapsed. Explain this observation.
answer
K.C.S.E Physics Q & A - MODEL 2010PP1QN01
​Figure 1 shows a vernier calipers being used to measure the internal diameter of a tube.
Record the diameter of the tube.
answers
K.C.S.E Physics Q & A - MODEL 2009PP2QN12
​ A boy standing in front of a cliff blows a whistle and hears the echo after 0.5s. He then moves 17 metres further away from the cliff and blows the whistle again. He now hears the echo after 0.6s. Determine the speed of the sound.
K.C.S.E Physics Q & A - MODEL 2009PP2QN10
​Figure 5 shows a magnet being moved towards a stationary solenoid. It is observed that a current flows through the circuit in a direction Q to P.
​Explain:
(i) How the current is produced (ii) Why the current flows from Q to P
answer
(i) Movement of magnet causes flux linkage to change
E.M.F is produced in the cell. (ii) When 1 flow from Q to P, a N. pole is created which opposes the approaching pole (long’s law). K.C.S.E Physics Q & A - MODEL 2009PP2QN09
​In an experiment, a pin a converging lens and a plane mirror are arranged as shown in figure 4. The distance between the pin and the plane mirror is L cm while the distance between the lens and the plane mirror is q cm. The position of the pin is adjusted until its tip coincides with its real image
​State the focal length of the lens
answer
K.C.S.E Physics Q & A - MODEL 2009PP2QN07Determine the speed of light in water given that the speed of light in air is 3.0 x 108 ms-1 and the refractive index of water is 1.33
K.C.S.E Physics Q & A - MODEL 2009PP2QN05
An electromagnet is made by winding insulated copper wire on an iron core. State two changes that could be made to increase the strength of the electromagnet.
answer
State the number of images formed when an object is between two plane mirror placed in parallel17/7/2020
K.C.S.E Physics Q & A - MODEL 2009PP2QN01
State the number of images formed when an object is between two plane mirror placed in parallel
answer
K.C.S.E Physics Q & A - MODEL 2009PP1QN11
​Figure 6 shows two inflated balloons hanging vertically on light threads
​When a stream of air is blown in the space between the balloons, they are observed to move towards each other. Explain this observations
ANSWER
K.C.S.E Physics Q & A - MODEL 2009PP1QN09
​Figure 4 shows a uniform cardboard in the shape of parallelogram
​Locate the centre of gravity of the cardboard
ANSWER
K.C.S.E Physics Q & A - MODEL 2009PP1QN08Two identical empty metal containers P and Q are placed over identical Bunsen burners and the burners lit. P is dull black while Q is shiny bright. After each container attains a temperature of 1000C the burners are turned off. Identical test tubes containing water are suspended in each container without touching the sides as shown in figure 3
​Explain why the container Q may become hot faster than P.
Explain why the water in test- tube in P becomes hot faster than in Q
ANSWERS
K.C.S.E Physics Q & A - MODEL 2009PP1QN06
​Two identical beakers A and B containing equal volumes of water are placed on a bench. The Water in A is cold while in B it is warm. Identical pieces of potassium permanganate are placed gently at the bottom of each beaker inside the water. It is observed that the spread of colour in B is faster than in A. Explain this observation.
answer
K.C.S.E Physics Q & A - MODEL 2009PP1QN03
A steel needle when placed carefully on water can be made to float. When a detergent is added to the water it sinks. Explain this observation
answer
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