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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

4R

B

2.5 R

C

3 R

D

`(4R)/(3)`

Text Solution

Verified by Experts

The correct Answer is:
C
Since, P-V diagram is straight line -
`P prop V -implies PV^(-1)` = constant
Molar heat capacity [`PV^(x)` = constant]
`C= (R)/(gamma-1)+(R)/(1-x)`
`implies C=(R)/(1.4-1)+R/2 implies C=3R`.
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