A) \[75.36\times {{10}^{-4}}joule\]
B) \[37.68\times {{10}^{-4}}joule\]
C) \[150.72\times {{10}^{-4}}joule\]
D) \[75.36joule\]
Correct Answer: A
Solution :
\[W=8\pi {{R}^{2}}T=8\times 3.14\times (10\times {{10}^{-2}})\times \frac{3}{100}\] \[=7.536\times {{10}^{-3}}J\]
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