A) 16 sec
B) 12 sec
C) 8 sec
D) 4 sec
Correct Answer: D
Solution :
\[T\propto \sqrt{l}\]Þ \[\frac{{{T}_{1}}}{{{T}_{2}}}=\sqrt{\frac{{{l}_{1}}}{{{l}_{2}}}}\] Þ \[\frac{2}{{{T}_{2}}}=\sqrt{\frac{l}{4l}}\] Þ \[{{T}_{2}}=4sec\]You need to login to perform this action.
You will be redirected in
3 sec