K.C.S.E Physics Q & A - MODEL 2003PP1QN03
Figure 3 shows two identical trolleys with loads A and B. The loads are identical in shape and size.
Given that the density of A is greater than that of B, explain why the trolley in figure 3(ii) is more suitable.
answer
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K.C.S.E Physics Q & A - MODEL 2003PP1QN02
Two identical spring balances R and S each weighing 0.5N are arranged as shown in Figure 2.
What is the reading on balance R?
answer
K.C.S.E Physics Q & A - MODEL 2002PP1QN20
A high jumper usually lands on thick soft mattress. Explain how the mattress helps in reducing the force of impact.
answers
K.C.S.E Physics Q & A - MODEL 2002PP1QN10
Fig. 5 shows a wire A and a spring B made of the same material. The thickness of the wire is the same in the both cases. Masses are added on each at the same intervals and the extension noted each time.
On the same axes provided, sketch the graphs of extension against load for each. (hookers law is obeyed.)
answers
K.C.S.E Physics Q & A - MODEL 2002PP1QN05The total weight of a car with passengers is 25,000N. The area of contact of each of the four tyres with the ground is 0.025m2. Determine the minimum car tyre pressure.K.C.S.E Physics Q & A - MODEL 2001PP1QN28
Fig. 19 shows two spheres made of wax each of mass 0.10kg held in a liquid by strings A and B.
If the upthrust on each sphere is 1.05N, determine the tension in each string.(acceleration due to gravity g = 10ms-2)
answer
K.C.S.E Physics Q & A - MODEL 2001PP1QN22
Fig. 15 shows a tall jar containing two fluids A and B. The viscosity of A is higher than that of B. A solid sphere is released at the top of the jar and falls through the fluids.
On the axes provided, sketch the velocity – time graph for the motion of the spheres through the fluids.
K.C.S.E Physics Q & A - MODEL 2001PP1QN10
Explain how polarization reduces current in simple cell.
ANSWER
K.C.S.E Physics Q & A - MODEL 2001PP1QN09
Fig. 7 shows “windmill” which when connected to the dome of a positively charged Van de Graff generator is observed to rotate as indicated. A, B, C and D are sharp points
Explain how this rotation is caused.
ANSWER
K.C.S.E Physics Q & A - MODEL 2001PP1QN06&7
Fig. 5 shows a flask fitted with a glass tube dipped into a beaker containing water at room temperature. The cork fixing the glass tube to the flask is airtight.
Use the information and the figure to answer questions 6 and 7.
State what is observed when ice- cold water is poured on the flask. Give a reason for the observation in question 6.
answers
K.C.S.E Physics Q & A - MODEL 2001PP1QN05
Fig. 4 (i) shows a beaker filled with water. Some potassium permanganate was gently introduced at the bottom of the beaker at the position shown.
Fig. 4(ii) shows the appearance of the liquid after about 30 minutes. Explain how this appearance was caused.
answer
K.C.S.E Physics Q & A - MODEL 2001PP1QN04
State the reason why it may not be possible to suck liquid into your mouth using drinking straw on the surface of the moon.
answer
K.C.S.E Physics Q & A - MODEL 2001PP1QN01
Fig. 1 shows a burette partly filed with a liquid. The burette was initially full to the mark O. If the quantity of the liquid removed has a mass of 22g, determine the density of the liquid.
K.C.S.E Physics Q & A - MODEL 2000PP1QN30
In fig. 18 ultra – violet (u,v) light falls on a zinc plate placed on a charged leaf electroscope. It is observed that the leaf collapses.
ANSWER
K.C.S.E Physics Q & A - MODEL 2000PP1QN10
State one advantage of an alkaline accumulator over a lead – acid accumulator.
ANSWER
K.C.S.E Physics Q & A - MODEL 2000PP1QN08
A wooden bench and a metal bench are both left in the sun for along time. Explain why the metal bench feels hotter to touch.
ANSWER
K.C.S.E Physics Q & A - MODEL 2000PP1QN05
Fig. 3 shows a device for closing a steam outlet.
The area of the position is 4.0 x 10-4 m2 and the pressure of the steam in the boiler is 2.0 x 105 Nm3. Determine the weight W that will just hold the bar in the horizontal position shown.K.C.S.E Physics Q & A - MODEL 2000PP1QN04
A positively charged rod is brought near the cap of a leaf electroscope. The cap is the earthed momentarily by touching with the finger. Finally the rod is withdrawn. The electroscope is found to be negatively charged. Explain how this charge is acquired.
ANSWER
K.C.S.E Physics Q & A - MODEL 2000PP1QN02
A bag of sugar is found to have the same weight on planet earth as an identical bag of dry sawdust on planet Jupiter. Explain why the masses of the two bags must be different.
ANSWERS
K.C.S.E Physics Q & A - MODEL 2000PP1QN01
Fig 1 shows part of a measuring cylinder calibrated in cm3 containing water whose level is indicated. Some 3.0cm of is added into the cylinder. Indicate on the diagram the new level of water.
K.C.S.E Physics Q & A - MODEL 1999PP1QN30
It is observed that when ultraviolet light is shone onto a clean zinc plate connected to the cap of negatively charged leaf electroscope, the leaf collapse. Explain this observation.
ANSWERS
K.C.S.E Physics Q & A - MODEL 1999PP1QN25
Figure 13 shows a section of a pipe PQ. A constant pressure difference maintains a streamline flow of a liquid in the pipe
If the cross-sectional area A1 at P is less than A2 at Q, state how the liquid velocity. V2 at Q compares with velocity V1 at P.
ANSWER
K.C.S.E Physics Q & A - MODEL 1999PP1QN09
Figure 7 shows a sharp pin fixed on a cap of leaf electroscope. The electroscope is highly charged and then left for sometime.
Explain why the leaf collapses
ANSWER
K.C.S.E Physics Q & A - MODEL 1999PP1QN05
Fig. 4 shows a capillary tube placed in though of mercury.
Give a reason why the level of mercury in the capillary tube is lower than in the beaker.
ANSWERS
K.C.S.E Physics Q & A - MODEL 1999PP1QN04
A vacuum pump was used to pump out air from the glass tube immersed in liquids as shown in figure3.
After sometime the level of paranum rose to position A. Mark 1, the corresponding position for the water level. Give a reason for your answer.
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