The acceleration due to gravity at a place is ${\pi ^2}\,m/se{c^2}$. Then the time period of a simple pendulum of length one metre is
The acceleration due to gravity at a place is ${\pi ^2}\,m/se{c^2}$. Then the time period of a simple pendulum of length one metre is
- A
$\frac{2}{\pi }\,sec$
- B
$2\pi \,sec$
- C
$2\,sec$
- D
$\pi \,sec$
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- [JEE MAIN 2013]
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