K.C.S.E Physics Q & A - MODEL 2006PP2QN15
​A nuclear reaction is represented by the following equation
​Determine the values of a and b
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K.C.S.E Physics Q & A - MODEL 2006PP2QN14
State with a reason the effect on the X- rays produced in a n X- ray tube, when the p.d across the tube is increased
ANSWER
K.C.S.E Physics Q & A - MODEL 2006PP2QN12&13
​Figure 6 shows a tube for investing the properties of a beam of electrons. Use the information in the figure to answer questions 12 and 13
12. What property of the beam of electrons show that the electrons are traveling at a very high speed?
13. The beam of electrons is subjected to a strong magnetic field which is perpendicular to the path and into the paper. Sketch on the same figure, the new path of electrons. K.C.S.E Physics Q & A - MODEL 2006PP2QN10&11
​What is meant by the term work function?
If the frequency of the illuminating radiation is just equal to the threshold frequency of the surface explain why no photoelectric effect is observed
ANSWERS
K.C.S.E Physics Q & A - MODEL 2006PP2QN09
State one condition under which Ohm's law is obeyed in a metal conductor
ANSWER
K.C.S.E Physics Q & A - MODEL 2006PP2QN08S soldier standing some distance from a wall, blows a whistle and hears its echo 1 seconds later. How far is the wall from the soldier? ( speed of sound in air is 330ms-1)K.C.S.E Physics Q & A - MODEL 2006PP2QN07
​Figure 5 shows wave fronts approaching a concave surface
Complete the diagram to show the wave fronts formed after striking the surface. Show how the focal point of the surface is located
K.C.S.E Physics Q & A - MODEL 2006PP2QN06
​Figure 4 shows a solenoid carrying an electric current.
​Sketch the magnetic field pattern inside and at the ends of the solenoid
K.C.S.E Physics Q & A - MODEL 2006PP2QN05
​A long coil is attached to a vibrating blade as shown in figure 3
​State the type of mechanical wave generated by the set - up and mark alongside the coil, the length corresponding to the wavelength of the wave.
K.C.S.E Physics Q & A - MODEL 2006PP2QN04
State a reason why the caps of the cells of a lead- acid battery are opened when charging the battery.
ANSWER
K.C.S.E Physics Q & A - MODEL 2006PP2QN03
​ A metallic body shaped as shown in figure 2 is positively charged and insulted from the ground as shown in the figure.
​On the figure show the charge distribution
K.C.S.E Physics Q & A - MODEL 2006PP2QN02
​In a certain pinhole camera, the screen is 10cm from the pinhole. When the camera is placed 6m away from a tree, a sharp image of the tree 16cm high is formed on the screen. Determine the height of the tree.
K.C.S.E Physics Q & A - MODEL 2006PP2QN01
Figure 1 shows two bar magnets placed with the south poles close together
In figure 1 sketch the magnetic field pattern between the two south poles
K.C.S.E Physics Q & A - MODEL 2006PP1QN18(a) Define specific latent heat of fusion of a substance
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