A) \[0.102\,\,m\]
B) \[0.105\,\,m\]
C) \[0.130\,\,m\]
D) \[0.110\,\,m\]
Correct Answer: A
Solution :
\[mgh=1\,\,J\Rightarrow 1\times 9.8\times h=1\]\[\Rightarrow \]\[h=\frac{1}{9.8}=0.102\,\,m\]
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