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An ideal gas of adiabatic exponent (gamm...

An ideal gas of adiabatic exponent `(gamma = 7/5)` is expanding at constant pressure. The ratio of `dQ:dU:dW` is (Symbols have their usual meanings)

A

`7:(5):(1)`

B

`7:(2):(5)`

C

`2:(1):(1)`

D

`7:(5):(2)`

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