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Physics

Physics
Conversion of sound energy into electrical energy is done by

Solar cell
Loudspeaker
Gramophone
Microphone

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Physics
The amount of matter in a ball of steel is its :

Weight
Mass
Volume
Density

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Physics
A piece of paper and a cricket ball are dropped from the same height. Under which of the following conditions do both reach the surface simultaneously ?

They must have the same density
They must have the same mass
They must have the same volume
They must be dropped in vacuum

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Physics
Pieces of camphor placed on water move about rapidly. This is because of

Surface tension
Viscosity
Capillarity
Diffusion

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Physics
Conversion of heat into electrical energy is achieved by using :

Ammeter
Voltmeter
Thermocouple
Hydrometer

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Physics
A body is initially moving with a velocity of 5 m/s. It undergoes an acceleration of 2 m/s2 for 4 seconds. Find the displacement (in m) of this body in these 4 seconds.

8
72
4
36

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