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A mass of diatomic gas(gamma=1.4) at a p...

A mass of diatomic gas`(gamma=1.4)` at a pressure of 2 atomphere is compressed adiabitically so that its temperature rises from `27^(@)C` to `927^(@)C`. The pressure of the gas in the final state is

A

28atm

B

68.7atm

C

256 atm

D

8atm

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