K.C.S.E Physics Q & A - MODEL 2005PP1QN26
State Bernoulli's principle.
ANSWERS
1 Comment
K.C.S.E Physics Q & A - MODEL 2005PP1QN25
​Fig 14 shows the velocity- time graph for a small metal sphere falling through a viscous fluid.
​On the axes provided sketch the graph of momentum against time for the same mass.
K.C.S.E Physics Q & A - MODEL 2005PP1QN23&24
​Fig 13 shows rays of light AO,BO, and CO incident on a glass-air interface. OA" OB" and OC" are the corresponding emergent rays. Study and answer questions 23 and 24.
​Determine the critical angles of the glass material
Determine the refractive of index of the glass material. K.C.S.E Physics Q & A - MODEL 2005PP1QN22
​ Fig. 12 shows a vertical object, O, placed in front of a convex mirror.
On the same diagram draw the appropriate rays and locate the image formed
K.C.S.E Physics Q & A - MODEL 2005PP1QN20&21
​Fig 11 shows the variation of temperature, with time t, when an immersion heater is used to heat a certain liquid. Study the figure and answer questions 20 and 21.
​ State the reason for the shape of graph in the section labeled BC
Sketch on the same axes the graph for another liquid of the same mass but higher specific heat capacity when heated from the same temperature.
K.C.S.E Physics Q & A - MODEL 2005PP1QN19
A hair drier is rated 2500W, 240V. Determine its resistance.K.C.S.E Physics Q & A - MODEL 2005PP1QN18
​A student wishes to investigate the relationship between current and voltage for certain device X. In the space provided, draw a circuit diagram including two cells, rheostat, ammeter, voltmeter ad the device X that would be suitable in obtaining the desired results.
K.C.S.E Physics Q & A - MODEL 2005PP1QN17
​An electronic siren producing sound continuously at a certain frequency is dropped from the top to a deep hole. State and explain what is observed about the pitch of the sound reaching the observer at the top.
answers
K.C.S.E Physics Q & A - MODEL 2005PP1QN16
​Fig 10 represents a transverse wave of frequency 5 Hz traveling in the x direction
Determine the speed of the wave.
K.C.S.E Physics Q & A - MODEL 2005PP1QN15
A certain machine uses an effort of 400N to raise a load of 600N. If the efficiency of the machine is 75%, determine its velocity ratio.K.C.S.E Physics Q & A - MODEL 2005PP1QN14A bullet is fired horizontally from a platform 15m high. If the initial speed is 300ms-1. Determine the maximum horizontal distance covered by the bullet.K.C.S.E Physics Q & A - MODEL 2005PP1QN12&13
​Fig 9 shows a current carrying coil in a magnetic field. The direction of the current and the resulting force are shown. Study the figure and answer questions 12 and 13.
​Label the poles of the magnets.
Explain the purpose of the split ring commutator in the principle of the D.C motor shown in the diagram. K.C.S.E Physics Q & A - MODEL 2005PP1QN11
​ Fig 8 shows water drops on two surfaces. In 8 (a) the glass surface is smeared with wax while in 8 (b) the glass surface is clean.
​Explain the difference in the shapes of the drops.
answer
K.C.S.E Physics Q & A - MODEL 2005PP1QN09&10
​Fig 7 shows the features of a dry cell(Luclache). Use the information in the figure to answer question 9 and 10
​State the polorites of the parts labeled A and B.
A B 10. Name the chemical substance in the parts labelled C and D C D K.C.S.E Physics Q & A - MODEL 2005PP1QN08
​Sketch the electrostatic field pattern due to the arrangement of the charges shown in Fig 6
K.C.S.E Physics Q & A - MODEL 2005PP1QN07
​Two identical tubes A and B held horizontally contain air and water respectively. A small quantity of coloured gas is introduced at one end of A while a small quantity of coloured water is introduced at one end of B. state with reason the tube in which the colour will reach the other end faster.
answer
K.C.S.E Physics Q & A - MODEL 2005PP1QN06
​Fig 5. Shows an arrangement of a source of light, an opaque object and a screen.
Using A, B and C as point sources, sketch on the same figure labeled ray diagram to show what is observed on the screen.
K.C.S.E Physics Q & A - MODEL 2005PP1QN05
In a vacuum flask the walls enclosing the vacuum are silvered on the inside. State the reason for this.
answer
K.C.S.E Physics Q & A - MODEL 2005PP1QN04
A can with a hole on the side is filled with water to a certain height. Water jets out as shown in Fig. 4(a). a second identical can is filled with water to the same height and a block of wood floated on the water as shown in Fig. 4 (b)​
​State the reason why the maximum distance of the jet, d2 is greater than d1
answer
K.C.S.E Physics Q & A - MODEL 2005PP1QN03
​The light uniform bar in Fig 3 is equilibrium. The two beakers A and B contain water at the same temperature. The two blocks are made of the same material.
​If the temperature of the water in beaker A is now raised, explain why the beam tips to side A.
Assume the solid does not expand.
answer
K.C.S.E Physics Q & A - MODEL 2005PP1QN02
​ Fig 2 shows a solid cylinder standing on a horizontal surface. The cylinder is in stable equilibrium
​On the horizontal space provided, sketch the cylinder in neutral equilibrium
K.C.S.E Physics Q & A - MODEL 2005PP1QN01
​ Figure 1 shows the reading on a burette after 55 drops of a liquid have been used.
If the initial reading was at Zero mark, determine the volume of one drop.
K.C.S.E Physics Q & A - MODEL 2004PP2QN07
a) i) What is photoelectric effect?
ii) You are provided with the following: a photocell, a source uv light, a rheostat, a source of e.m.f, a milliammeter, a voltmeter and connecting wires. Draw a circuit diagram to show how photoelectric effect may be demonstrated in the laboratory. b) In a photoelectric effect experiment, a certain surface was illuminated with radiation of different frequencies and the stopping potential determined for each frequency ​Table 2 shows the results obtained. (i) Plot the graph of the graph of stopping potential (y-axis) against frequency.
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