A) 1904 J
B) 1984 J
C) 3202 J
D) 2082 J
Correct Answer: D
Solution :
Heat supplied to vaporise the water \[dQ=mL\] where L is the latent heat of vaporisation of water. \[\therefore \] \[dQ=1\times 2250=2250\,J\] According to first law of thermodynamics, \[dQ=dU+dW\] or \[2250=dU+dW\] or \[dU=2250-168\] \[=2082\,J\]You need to login to perform this action.
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