Question

The time period of a seconds pendulum:

• A. 1 second
• B. 2 seconds
• C. 3 seconds
• D. 4 seconds

Answer 1

The correct option is B

2 seconds

1. A seconds pendulum takes one second for a swing in one direction and one second for the return swing, so totally it needs 2 seconds to come to its original position
   
   
2. The time period of the pendulum is,
   $T=2\mathrm{\pi }\sqrt{\frac{\mathrm{L}}{\mathrm{g}}}$
3. Where $T$is the time period , $L$ is the length of the string , $g$is the acceleration because of gravity