State what happens to the image formed by a pin hole camera when the size of the hole is increased29/7/2020
K.C.S.E Physics Q & A - MODEL 2018PP2QN04
State what happens to the image formed by a pin hole camera when the size of the hole is increased
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 K.C.S.E Physics Q & A - MODEL 2018PP2QN03
Figure 1 shows a bar magnet AB suspended by a string.
When the North pole of another magnet is brought close to end A, there is repulsion State the polarity of end B.
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K.C.S.E Physics Q & A - MODEL 2018PP2QN02
State one characteristic of soft X-rays that distinguish them from hard X-rays.
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K.C.S.E Physics Q & A - MODEL 2018PP2QN01
Explain why the walls of a studio are padded with woollen materials
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K.C.S.E Physics Q & A - MODEL 2018PP1QN12
Figure 8 shows the graph of extension against force for a certain helical spring.
On the same diagram sketch the graph of extension against force for a spring with a lower value of spring constant.
answer
K.C.S.E Physics Q & A - MODEL 2018PP1QN11
Figure 7 shows an L-shaped Wooden Structure
On the diagram, construct appropriate lines to Show the position of the center of gravity for the structure
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K.C.S.E Physics Q & A - MODEL 2018PP1QN06
Figure 3 shows the shape of a bimetallic strip after it was cooled below room temperature.
Explain why the strip curved as shown.
answer
K.C.S.E Physics Q & A - MODEL 2018PP1QN05
It is observed that a drop of milk carefully put into a cup of water turns the water white after some time. State the reason for this observation.
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K.C.S.E Physics Q & A - MODEL 2018PP1QN03
Describe how the knowledge of the oil drop experiment may be used to estimate the area of oil spillage from a ship in the sea assuming the surface water is not disturbed.
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K.C.S.E Physics Q & A - MODEL 2017PP2QN09
Figure 2 shows a virtual image I formed by a convex lens.
Draw a ray diagram to locate the object.
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K.C.S.E Physics Q & A - MODEL 2017PP2QN07
Explain how the greenhouse gets warm.
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K.C.S.E Physics Q & A - MODEL 2017PP2QN06
Figure 1 shows an insulated wire wound on a U-shaped iron core connected to a battery.
Determine the polarity of A.
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K.C.S.E Physics Q & A - MODEL 2017PP2QN05
State two advantages of using convex mirrors to monitor movements in a large supermarket.
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K.C.S.E Physics Q & A - MODEL 2017PP2QN03
State one use of echoes.
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K.C.S.E Physics Q & A - MODEL 2017PP2QN02
In a laboratory there are four metals — tin, nickel, copper and cobalt. Of these metals, name the metals that are;
(a) magnetic. (b) non-magnetic.
answers
K.C.S.E Physics Q & A - MODEL 2017PP1QN16
(a) In an experiment to determine the size of an oil molecule, oil is placed on the surface of water after sprinkling lycopodium powder on it.
(i) State two reasons why oil is used. (ii) State the function of the lycopodium powder. (iii) State any two assumptions that are made in this experiment. (iv) Explain why the oil spreads on the surface of water.
(b) The following data was obtained from an experiment to determine the size of a palm oil molecule.
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