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An ideal gas with pressure P, volume V a...

An ideal gas with pressure P, volume V and temperature T is expanded isothermally to a volume `2V` and a final pressure `P_i`. If the same gas is expanded adiabatically to a volume `2V`, the final pressure is `P_a`. The ratio of the specific heats of the gas is `1.67`. The ratio `p_a//p_i` is _______.

A

`2^(gamma-1)`

B

`2^(1-gamma)`

C

`2^(gamma)`

D

`2gamma`

Text Solution

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The correct Answer is:
A
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