A) \[10\times {{10}^{3}}\,watt\]
B) \[20\times {{10}^{3}}\,watt\]
C) \[4\times {{10}^{3\,}}watt\]
D) \[60\times {{10}^{3}}\,watt\]
Correct Answer: A
Solution :
\[P=\frac{W}{t}=\frac{mgh}{t}=\frac{200\times 10\times 50}{10}\]\[=10\times {{10}^{3}}\,W\]
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