A) \[{{10}^{7}}\pi J\]
B) \[{{10}^{4}}\pi J\]
C) \[{{10}^{2}}\pi J\]
D) \[{{10}^{-3}}\pi J\]
Correct Answer: C
Solution :
[c] As \[\Delta U=0\]in a cyclic process, \[AQ=AW=\text{area of circle}=\pi {{r}^{2}}\]
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