A constant voltage source supplies a sinusoidal alternating e.m.f. The voltage marked against the components are their peak values. Determine the peak value of the applied e.m.f
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2024
For a convex lens to form a real image, the distance between the object and the screen will be:
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2024
A particle of mass 3.6 x 10\(^{-6}\)kg revolving around the earth has a radial acceleration of 4.3 x 10\(^7\)ms\(^{-2}\). Calculate the centripetal force of the particle.
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2024
In the circuit diagram above, which lamp causes the other to go off?
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2024
Two isolated charged spheres each of magnitude + 1.0 x 10\(^{-6}\) C are seperated by a distance of 2.0 x 10\(^{-1}\) m. Calculate the magnitude of the electrostatic force between them [K = \(\frac{1}{4\pi \epsilon_o}\)…
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2024
All of the following uses are practical applications of x-ray except
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2024
A temperature of 60º C is equivalent to
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2024
A cube of water with side 10.0 cm floats vertically in water with 4.5 cm its length submerged. Calculate the density of the wood.
[Density of water = 1 g/cm\(^3\); D = 0.090 g/cm\(^3\)]
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2024
Chromatic aberration in lenses can be corrected by using a combination of
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2024
An object is placed 1.5 m from a plane mirror. How far is the image from the object?
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2024
To convert a milli-ammeter to an ammeter, a resistor of low value is necessary to connect a resistor of
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2024
A stone of mass 200 g attached to a string is made to revolve in a horizontal circle of radius 1.5 m at a steady speed of 5 m/s. Calculate the tension in the string at the bottom of the circle.
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2024
The law of conservation of momentum is stated for closed and isolated system. What are the two conditions for a system to be closed and isolated?
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A body moves with uniform velocity when the resultant force on it is
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2024
The function of a fuse in an electric circuit is to
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A ray of light travels from a less dense medium to a denser medium. How are the speed and frequency of the light affected? The speed
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2024
The diagram above illustrates the motion of a cyclist from P to R. The distance travelled is determined by the
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The capacitance of a parallel plate capacitor
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What are cathode rays?
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In which of the following states is MAXIMUM pressure exerted on a person