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Q.

A gas undergoes adiabatic reversible expansion. Which of the following expressions holds good?

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a

$p V^{γ} = constant$

b

$p^{C_{p, m}} V^{C_{V, m}} = constant$

c

$p^{γ} V = constant$

d

$p V = constant$

answer is B.

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Detailed Solution

For adiabatic reversible expansion $p V^{γ} = constant$ where $γ = C_{p, m} / C_{V, m}$

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