Q 1302080838.     A gas with `frac {C_p}{C_v} = gamma` goes from an initial state of `(P_1,V_1,T_1)` to a final state of `(P_2,V_2,T_2)` through an adiabatic process. The work done by the gas is?

A

`frac{nR (T_1-T_2)}{\gamma-1}`

B

`frac{(P_1V_1+P_2V_2) (T_1-T_2)}{gamma-1}`

C

`gamma frac{(P_1V_1+P_2V_2)}{gamma}`

D

`frac{ngamma R (T_1-T_2)}{gamma-1}`

HINT

`Delta Q = 0` for an adiabatic process.

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