K.C.S.E Physics Q & A - MODEL 2000PP1QN31
​Fig (19) drawn to scale) shows the image, I, formed by a diverging lens. F is principal focus of the lens.
By drawing the appropriate rays on the same diagram, locate the position of the object.
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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 2000PP1QN29
State two uses of microwaves.
ANSWER
K.C.S.E Physics Q & A - MODEL 2000PP1QN28
​Fig 17 (a) shows the wave pattern at resonance in an open tube when a turning fork of frequency fo is sounded near one end of the tube.
​Sketch in fig 17(b) the pattern of the wave at resonance when a fork of frequency 3fo is sounded near one end of an identical tube.
K.C.S.E Physics Q & A - MODEL 2000PP1QN27
​In fig 16.(a) the Polaroids ABCD and EFGH are oriented such that maximum light reaches the screen S. Sketch at X on Fig. 16 (b) the orientation of EFGH such that no light reaches S.
K.C.S.E Physics Q & A - MODEL 2000PP1QN26
​ Fig. 15 shows a battery of emf 3.0 V connected in series with two capacitors.
K.C.S.E Physics Q & A - MODEL 2000PP1QN25
​A student holds a sheet of paper at one end so that it hangs in the position A shown in fig. 14
​Explain why the paper rises to the position B when the student blows air in the direction shown by the arrow.
ANSWER
K.C.S.E Physics Q & A - MODEL 2000PP1QN24
​Fig 13. Shows a semicircular glass block placed on a bench. A ray of light is incident at point O as shown. The angle of incidence, I , is just greater than the critical angle of glass.
​A drop of water is now placed on the bench so as to make contact with the glass at point O. Sketch on the same figure the path followed by the ray after placing the drop of water.
K.C.S.E Physics Q & A - MODEL 2000PP1QN23
​Fig. 12 shows a ray of light incident on a convex mirror
​Using a suitable construction on the same diagram determine the radius of curvature of the mirror
K.C.S.E Physics Q & A - MODEL 2000PP1QN22
​Two identical blocks of copper are taken from the same furnace. One block is dropped into a well - lagged calorimeter containing 200g of methylated spirit. Both water and spirit were initially at the same temperature. After being given time to stabilize the temperature, it was found that more spirit than water had evaporated.
State two factors that could have caused this difference.
ANSWER
K.C.S.E Physics Q & A - MODEL 2000PP1QN21
​A wire is stretched between two fixed points such that when it is plucked, it produces sound. Explain why the pitch of the sound produced may become lower when the temperature of the surrounding rises.
ANSWER
K.C.S.E Physics Q & A - MODEL 2000PP1QN20
​A body initially resting on horizontal surface is accelerated by a constant force. It passes over a small region where it experiences a force of friction equal to the accelerating force before returning to the frictionless horizontal surface. On the axes provided, sketch the velocity time graph for the motion of the body
An electric bulb rated, 40W is operating on 240V mains. Determine the resistance of its filament.8/7/2020
K.C.S.E Physics Q & A - MODEL 2000PP1QN19
An electric bulb rated, 40W is operating on 240V mains. Determine the resistance of its filament.K.C.S.E Physics Q & A - MODEL 2000PP1QN18
​In fig. 11 ammeters have negligible resistance and the cells are all identical
Show that all the ammeters A1, A2, and A5 have the same reading.
Let A's represent current thought the ammeters using the Kirchoffs law.
K.C.S.E Physics Q & A - MODEL 2000PP1QN17
Give one example of a longitudinal wave.
ANSWER
K.C.S.E Physics Q & A - MODEL 2000PP1QN15&16
​Fig 10 shows a pulley system being used to raise a load. Use the information given in the figure to answer the questions 15 and 16.
​Determine the velocity ratio (VR) of the system.
If a load on 100N is raised by applying an effort of 28N, determine the efficiency of the system K.C.S.E Physics Q & A - MODEL 2000PP1QN14
​In fig 9 the couple represented by forces F1 is acting on light uniform bar.
Sketch on the figure a couple represented by forces F2 such that the bar is in equilibrium. And the forces F2 have minimum magnitude.
K.C.S.E Physics Q & A - MODEL 2000PP1QN13
​In fig 8 the arrow indicates the directions of the current in the conductor
Sketch on the diagram the magnetic field pattern due to the current.
K.C.S.E Physics Q & A - MODEL 2000PP1QN12
​ Fig. 7 shows how magnets are stored in pairs with keepers at the ends
​Explain how this method of storing helps in retaining magnetism longer.
ANSWER
K.C.S.E Physics Q & A - MODEL 2000PP1QN11
​The structure in fig. 6 is in equilibrium. Identify the struts and the ties in the structure.
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 2000PP1QN09
​ Fig. 5 shows an object O placed infront of a plane mirror.
​On the same diagram draw rays to locate the position of the image I, as seen from the eye E.
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 2000PP1QN07
​Fig. 4 shows a bimetallic thermometer.
​Explain how a rise in temperature causes the pointer to move in the direction shown.
ANSWER
K.C.S.E Physics Q & A - MODEL 2000PP1QN06
State the reason why gases are easily compressible while liquids are solids are not?
ANSWER
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