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Physics

Physics
The dimension MLT–2 corresponds to

Work done
Velocity
Force
Acceleration

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Physics
Which one of the following is a good electrical conductor?

Charcoal
Peat
Graphite
Diamond

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Physics
The magnifying power of an astronomical telescope can be decreased by

None of these
Decreasing the focal length of the eyepiece
Increasing the focal length of the objective
Increasing the focal length of the eyepiece

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Physics
Least audible sound for most of the human ear is :

5.0 µ bar
0.005 µ bar
10.0 µ bar
0.0002 µ bar

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Physics
The energy stored in a watch spring is

Heat energy
Chemical energy
Potential energy
Kinetic energy

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Physics
Why does ice covered in sawdust not melt quickly ?

The water is absorbed by sawdust
Sawdust is good conductor of heat
Sawdust does not allow the air to touch the ice
Sawdust is a bad conductor of heat

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