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14. Thermodynamics question bank (Physics)

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Q1.

$A$ monoatomic gas at pressure $P$ having volume $V$ expands isothermally to a volume $2V$ and then adiabatically to a volume $16V$. The final pressure of the gas is $\left(\gamma = \frac{5}{3}\right)$.

(A)

$\frac{P}{64}$

(B)

$\frac{P}{128}$

(C)

$\frac{P}{8}$

(D)

$\frac{P}{32}$

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Q2.

For a monoatomic gas, the work done at constant pressure is $W$. The heat supplied at constant volume for the same rise in temperature of the gas is

(A)

$2 \,W$

(B)

$W$

(C)

$\frac{W}{2}$

(D)

$\frac{3 \,W}{2}$

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