A) \[{{10}^{-4}}\sec \]
B) \[{{10}^{-2}}\sec \]
C) \[2\times {{10}^{-4}}\sec \]
D) \[2\times {{10}^{-2}}\sec \]
Correct Answer: C
Solution :
\[V=\sqrt{\frac{Y}{\rho }}=\sqrt{\frac{2\times {{10}^{11}}}{8000}}=\frac{{{10}^{4}}}{2}=5000\,\text{m/s}\] \[\text{t}=\frac{1}{5000}\text{m/s}=2\times {{10}^{-4}}\sec \]You need to login to perform this action.
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