Physics · 2021
JEE Main · 25 July 2021, Shift 2 · Q9
A heat engine has an efficiency of 1/6. When the temperature of sink is reduced by 62^° C, its efficiency get doubled. The temperature of the source…
A heat engine has an efficiency of $\displaystyle \frac{1}{6}$. When the temperature of sink is reduced by $\displaystyle 62^{\circ} \mathrm{C}$, its efficiency get doubled. The temperature of the source is :
Official answer
(3)
$\displaystyle 99$°C
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JEE Main 2021 Physics question, with the answer from NTA’s final answer key. Where our answers come from.