Physics
The dimension of which of the following is the same as that of impulse ?

Momentum
Torque
Volume
Change in the rate of momentum

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Physics
Absolute Zero is defined as

At which water boils at 298K
At which liquid Helium boils
The temperature at which all molecular motion ceases
At which the volume becomes zero

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Physics
The Hooke's law is valid for

Entire elastic region of the stress strain curve
Entire stress strain curve
Elastic as well as plastic region of the stress strain curve
Only proportional region of the stress strain curve

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Physics
In a conductor

The forbidden energy gap is very narrow
There is no conduction band
The valence band and the conduction band overlap each other
The forbidden energy gap is very wide

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