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Physics

Physics
Conversion of sound energy into electrical energy is done by

Gramophone
Solar cell
Loudspeaker
Microphone

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Physics
The electric current in a metal wire is due to the flow of -

Holes
Protons
Electrons
Ions

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Physics
A body of mass 5 kg accelerates from 12 m/s to 20 m/s in 4 seconds due to the application of a force on it. Calculate the magnitude of this force (in N).

20
10
80
40

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Physics
The radiation initially produced in fluorescent tube is

X-rays
Infrared
Ultraviolet
Microwaves

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Physics
When a steel ball is placed on the surface of mercury, it does not sink because

The density of mercury is greater than that of steel
Of the surface tension of mercury
Of the high viscosity of mercury
Mercury is a semisolid

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Physics
The fuse in an electric circuit is connected in

Parallel to live
Parallel to neutral
Series with neutral
Series with live

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MORE MCQ ON Physics

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