For a simple pendulum, time period for a beat, is
A
$$\pi \sqrt {\frac{l}{{\text{g}}}} $$
B
$$\pi \sqrt {\frac{{2l}}{{\text{g}}}} $$
C
$$\pi \sqrt {\frac{{\text{g}}}{{2l}}} $$
D
$$\pi \sqrt {\frac{l}{{2{\text{g}}}}} $$
E
$$\pi \sqrt {\frac{{2{\text{g}}}}{l}} $$
Correct Answer: $$\pi \sqrt {\frac{l}{{\text{g}}}} $$