Physics · 2026
JEE Main · 8 April 2026, Shift 2 · Q36
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 V_final…
Initial pressure and volume of a monoatomic ideal gas are $\displaystyle P$ and $\displaystyle V$. The change in internal energy of this gas in adiabatic expansion to volume $\displaystyle V_{\text {final }}=27 V$ is $\displaystyle \_\_\_\_$J.
Official answer
From NTA’s final answer key for this paper.
(3)
$\displaystyle -\frac{4}{3} P V$
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JEE Main 2026 Physics question, with the answer from NTA’s final answer key. Where our answers come from.