Initial pressure and | KTG & THERMODYNAMICS | JEE Main 2026

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08-04-2026 S2

Question

Initial pressure and volume of a monoatomic ideal gas are P and V . The change in internal energy of this gas in adiabatic expansion to volume $\mathrm{V}_{\text {final }}=27 \mathrm{~V}$ is $\_\_\_\_$ J.

Select the correct option:

A

$-2 P V(3 \sqrt{3}-1)$

B

$\frac{4}{3} P V$

C

$-\frac{4}{3} P V$

D

$\frac{3}{4} P V$

✓ Correct! Well done.

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