If the direction of the curent in a straight wire is reversed, the magnetic field
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2009
A battery of e.m.f. 12.0V and internal resistance0.5\(\Omega\) is connected to 1.5\(\Omega\) and 4.0\(\Omega\) series resistor. Calculate the terminal voltage of the battery.
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2009
A wire of resistivity 4.40 x 10-5\(\Omega\) cm has a cross sectional area of 7.50 x 10-4 cm2. Calculate the length of the wire that will be required to make a 4.0\(\Omega\) resistor
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2009
An electron of mass 9.1 x 10-31 kg moves with a speed of 107ms-1. Calculate the wavelength of the associates wave[h = 6.6 x 10-34Js]
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2009
The main difference between between x-rays and \(\gamma-rays\) lies in their
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2009
Two isotopes of uranium are designed as \(^{238}U\) and \(^{235}U\). The numbers 238 and 235 represent their
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2009
In the actual exam, a setup will be provided, where you'll use a potentiometer wire, a standard resistor, an ammeter, a switch, a jockey, and other necessary apparatus to perform an electrical experiment as per the given…
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2009
In the actual exam, a setup will be provided, where you'll use a measuring cylinder, two different tins labeled C and D, a thermometer, and other necessary materials to perform a heat experiment. The steps include measur…
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2009
In the actual exam, a setup will be provided, where you'll use two meter rules, a measuring cylinder, a thermometer, and other necessary apparatus to perform a physics experiment. The steps include determining the center…
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2009
State three methods of polirizing an unpolarized light
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2009
Give three observations in support of de Broglie's assumption that moving particles behave like waves
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2009
(a) Briefly explain the following terms:
(i) emission line spectra;
(ii) line absorption spectra.(b) Draw a labeled diagram showing the structure of a simple type of photocell and explain its mode of operation.(c) Stat…
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2009
(a) State two essential differences between a moving coil galvanometer and a d.c. generator.(b) Explain the term eddy currents and state two devices in which the currents are applied.(c) State the principle on which the…
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2009
(a) State two differences between a sound wave and a radio wave.(b) Explain why a vibrating tuning fork sounds louder when its stem is pressed against a table top than when held in air.(c)State two conditions necessary f…
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2009
(a) Explain why it is not advisable to sterilize a clinical thermometer in boiling water at normal atmospheric pressure.(b) State the effect of an increase in pressure on the
(i) boiling point; and
(ii) melting point o…
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2009
a) Given a retort stand and clamp, a stout pin, a simple pendulum and a pencil, describe how you would use these apparatus to determine the centre of gravity of an irregularly shaped piece of cardboard of a moderate size…
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2009
a) List two properties of cathode rays.
(b) Explain how the intensity and energy of cathode rays may be increased
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2009
a) Define diffusion.
(b) State two applications of electrical conduction through gases.
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2009
Explain the following terms:(a) tensile stress;(b)Young s modulus
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2009
(a) State Faraday s second law of electrolysis.(b) An electric charge of 9.6 x 10\(^4\) C liberates 1 mole of substance containing 6.0 x 10\(^{23}\) atoms. Determine the value of the electronic charge