The latent heat of vaporization of water is $2240 \,J/gm$. If the work done in the process of vaporization of $1\, gm$ is $168\, J$, then increase in internal energy is .... $J$
A$2408$
B$2240$
C$2072$
D$1904$
Medium
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C$2072$
c $\mathrm{L}=2240 \mathrm{J}, \mathrm{m}=1 \mathrm{gm}$
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