Physics
Gas thermometers are more sensitive than the liquid thermometers because the gases

Have large coefficient of expansion
Have low specific heat
Are lighter
Have high,specific heat

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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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Physics
Stationary wave is formed by

Two waves of same frequency travelling in the same direction
Two waves of same frequency travelling in the opposite direction
A transverse wave superposing a longitudinal wave
Two waves of the same speed superposing

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