K.C.S.E Physics Q & A - MODEL 2011PP2QN04&5
Figure 4. shows the cross-section of a dry cell. Use the information on the figure to answer questions 4 and 5.
​Name the parts labelled A and B.
State the use of the manganese (IV) oxide in the cell.
answers
​4. A = Carbon rod(+);
B = Manganese (VI) oxide 5. Manganese (IV) oxide is a depolarizer/oxidizing agent;
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K.C.S.E Physics Q & A - MODEL 2011PP2QN02
​Figure 2, shows two identical pithballs A and B suspended with insulated threads. They are
separated by an insulator X. A is positively charged while B is negatively charged. The quantity of charge on A is three times the quantity of charge on B.
​Sketch on the space besides the figure, the final position of the pithballs after the insulation removed.
K.C.S.E Physics Q & A - MODEL 2011PP1QN14
​Figure 9 shows a syringe full of water. It has two identical holes A and B drilled along it’s cylinder. The cylinder nozzle is closed.
​State with a reason how the speeds of the jets of water from A and B compare when the piston is pushed into the cylinder.
ANSWER
K.C.S.E Physics Q & A - MODEL 2011PP1QN11&12
​Figure 8 shows a uniform wooden block of mass 2kg and length 25cm lying on a bench. It hangs over the edge of the bench by 10cm. Use the figure to answer questions l1 and 12
​Indicate on the figure two forces acting on the wooden block.
Determine the minimum force that can be applied on the wooden block to make it turn about the edge of the bench K.C.S.E Physics Q & A - MODEL 2011PP1QN09
​Figure 7 shows part of a petrol engine, in which air flowing under atmospheric pressure passes into a constriction, where it mixes with petrol. The mixture then flows into a combustion cylinder.
​Explain what causes the petrol to move from the petrol chamber to the air stream in the constriction when the piston is moved downwards.
ANSWER
K.C.S.E Physics Q & A - MODEL 2011PP1QN03
​Figure 2 shows a spring balance. It’s spring constant is 125N/m. The scale spreads over a distance of 20cm.
​Determine the maximum weight that can be measured using this spring.
K.C.S.E Physics Q & A - MODEL 2011PP1QN02
State the constant force that opposes the motion of a stone initially at rest, as it falls through air from a tail building.
ANSWER
K.C.S.E Physics Q & A - MODEL 2010PP2QN04
​A positively charged sphere is suspended by an insulating thread. A negatively charged conductor is suspended near it. The conductor is first attracted, after touching the sphere it is repelled. Explain this observation.
answer
K.C.S.E Physics Q & A - MODEL 2010PP1QN16
​In an experiment to determine the density of sand using a density bottle, the following
measurements were recorded: Mass of empty density bottle = 43 .2g Mass of density bottle full of water = 66.4g Mass of density bottle with some sand = 67.5g Mass of density bottle with the sand filled up with water = 823g Use the above data to determine the
​(a) mass of water that completely tilled the bottle;
(b) volume of water that completely filled the bottle; (c) volume of the density bottle; (d) mass of sand; (e) mass of water that filled the space above the sand; (f) volume of the sand; (g) density of the sand. K.C.S.E Physics Q & A - MODEL 2010PP1QN11
​When a bicycle pump was sealed at the nozz1 and the handle slowly pushed towards the nozzle, the pressure of the air inside increased.
Explain this observation.
answer
K.C.S.E Physics Q & A - MODEL 2010PP1QN10The weight of a solid in air is 5.ON. When it is fully immersed in a liquid of density 800Kgm-3 its weight is 4.04N.
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