Physics · 2020
JEE Main · 7 January 2020, Shift 1 · Q8
A litre of dry air at STP expands adiabatically to a volume of 3 litres. If γ=1.40, the work done by air is: (3^1.4=4.6555) [Take air to be an ideal…
A litre of dry air at STP expands adiabatically to a volume of $\displaystyle 3$ litres. If $\displaystyle \gamma=1.40$, the work done by air is : $\displaystyle \left(3^{1.4}=4.6555\right)$ [Take air to be an ideal gas]
Official answer
(2)
90.$\displaystyle 5$ J
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JEE Main 2020 Physics question, with the answer from NTA’s final answer key. Where our answers come from.