A) 4 sec
B) 5 sec
C) 8 sec
D) 10 sec
Correct Answer: C
Solution :
\[P=\frac{mgh}{t}=10\times {{10}^{3}}\]Þ \[t=\frac{200\times 40\times 10}{10\times {{10}^{3}}}\]\[=8\,\sec \]You need to login to perform this action.
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