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p-V diagram of a diatomic gas is a strai...

p-V diagram of a diatomic gas is a straight line passing through origin. The molar heat capacity of the gas in the process will be

A

` (3 R)/2`

B

`R/2`

C

`2 R`

D

`3 R`

Text Solution

Verified by Experts

The correct Answer is:
C
`C = R/(gamma - 1) + R/(1 -n)` for the process `PV^2 ` = const and the given process is `p prop V` i.e.
`PV^(-1)` = const ` rArr n = -1 rArr C = R/((5//3)-1) + R/2 = 2.R`
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