A) 20 J
B) 40 J
C) 100 J
D) zero
Correct Answer: A
Solution :
As the process is sudden, so it is adiabatic. Now, \[\Delta Q=\Delta U+\Delta W\,\Delta 0=\Delta U-20\Rightarrow \Delta U=20\,J\] Hence, the correction option is [a].You need to login to perform this action.
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