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Internal Energy

The specific ...

Question

The specific heat of a gas at constant pressure as compared to that at constant volume is

A

less

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B

equal

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C

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D

constant

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Solution

The correct option is A more
When the gas is heated at constant pressure, some amount of heat is used up in increasing the volume of the gas. For a constant volume process no such heat is required. Thus $C_{p} > C_{v}$

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