Physics · 2025
JEE Main · 23 January 2025, Shift 2 · Q34
Water of mass m gram is slowly heated to increase the temperature from T_1 to T_2. The change in entropy of the water, given specific heat of water…
Water of mass m gram is slowly heated to increase the temperature from $\displaystyle \mathrm{T}_1$ to $\displaystyle \mathrm{T}_2$. The change in entropy of the water, given specific heat of water is $\displaystyle 1 \mathrm{Jkg}^{-1} \mathrm{~K}^{-1}$, is :
Official answer
From NTA’s final answer key for this paper.
(4)
$\displaystyle \mathrm{m} \ln \left(\frac{\mathrm{~T}_2}{\mathrm{~T}_1}\right)$
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JEE Main 2025 Physics question, with the answer from NTA’s final answer key. Where our answers come from.