Determine the potential difference. V across the parallel resistors
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2010
an electron moves with a speed of 2.0 x 106ms-1 in a straight line. Calculate the wave length of the electron wave. [mass of an electron = 9.1 x 10-31 kg][Planck's constant = 6.6 x 10-34Js]
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2010
Eddy currents can be reduced by
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2010
The resonant frequency of an a.c circuit is 1000 kHz. If each of the capacitance and inductance in the circuit is reduced by 50%, and no other changes are made, the resonant frequency will become
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2010
The energy, E stored in an inductor of inductance L when current I passes through it is given by the equation
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2010
In order to prevent bar magnets from losing their strength, they are stored wih keepers such that the two bars are placed with
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2010
Neutrons are used to induce artificial radioactivity because they
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2010
In a cathode ray tube, the function of the x-plates is to
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2010
Oxidation of the filament in a light bulb is prevented by the introduction of
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2010
Two simple pendula x and y make 400 and 500 oscillations respectively in equal time. If the period of oscillation of x is 1.5 seconds, what is the period of oscillation of y?
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2010
You are provided with a voltmeter V, a chemical cell/ battery E; two standard resistors R, and R a potentiometer a key K a jockey, and other necessary materials.Set up a circuit as shown in the diagram above.Close the ke…
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2010
In the actual exam, a setup will be provided, where you will use a glass block, a plane mirror, and optical pins to perform an experiment. The steps include tracing the outline of the glass block, measuring its width, dr…
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2010
You are provided with three retort stands, a pendulum bob, a drawing board, a stopwatch, and other necessary apparatus. Using the diagram above as a guide, carry out the following instructions.Fix the drawing paper on th…
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2010
(a) State three conclusions that can be drawn from Rutherford's experiment on the scattering of alpha particles by a thin metal foil in relation to the structure of the atomThe diagram above illustrates th3 energy levels…
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2010
(a)When a positively charged conductor is placed near a candle flame, the flame spreads out as shown in the diagram above. Explain this observation.(b) A proton moving with a speed of 5.0 x 10\(^{5}\) ms\(^{-1}\) enters…
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2010
(a) State two factors which affect the angle of deviation of a ray of light through a triangular glass prism.(b) Seven virtual images of an object are formed when two plane mirrors are inclined at an angle 0 to each othe…
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2010
(a) Explain the terms: (i) inertia; (ii) inertial mass.(b) List three factors which affect the rate of evaporation of water in a pond.(c) Two ice cubes pressed together for some time were found to stick together when the…
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2010
(a) Distinguish between perfectly elastic collision and perfectly inelastic collision.(b) Sketch a distance time graph for a particle moving in a straight line with:(i) uniform speed;(ii) variable speed.(c) A body starts…
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2010
(s) State the Heisenberg Uncertainty Principle.
(b) The product of the uncertainties in Heisenberg Uncertainty Principle is equal to or greater than a constant. State the mathematical expression for this constant.
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2010
(a) Write down the names of two particles used in explaining the wave nature of matter.(b) State the wave characteristics which are exhibited by the particles named in (a) above.