A) 1 sec
B) 4 sec
C) 8 sec
D) 0.5 sec
Correct Answer: A
Solution :
\[\frac{{{T}_{1}}}{{{T}_{2}}}=\sqrt{\frac{{{M}_{2}}}{{{M}_{1}}}}=\sqrt{\frac{4M}{M}}=2\Rightarrow \frac{2}{{{T}_{2}}}=2\]\[\Rightarrow {{T}_{2}}=1\sec \]
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