Physics · 2026
JEE Main · 22 January 2026, Shift 1 · Q35
The volume of an ideal gas increases 8 times and temperature becomes (1 / 4)^th of initial temperature during a reversible change. If there is no…
The volume of an ideal gas increases $\displaystyle 8$ times and temperature becomes $\displaystyle (1 / 4)^{\text {th }}$ of initial temperature during a reversible change. If there is no exchange of heat in this process $\displaystyle (\Delta \mathrm{Q}=0)$ then identify the gas from the following options (Assuming the gases given in the options are ideal gases):
Official answer
From NTA’s final answer key for this paper.
(1)
He
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JEE Main 2026 Physics question, with the answer from NTA’s final answer key. Where our answers come from.