Q.

The time period of a second’s pendulum is –

A. 1 second
B. 2 seconds
C. 0.5 second
D. 1.5 seconds
Answer» B. 2 seconds
Explanation: A seconds pendulum is a pendulum whose period is precisely two seconds; one second for a swing in one direction and one second for the return swing, a frequencyof 1/2 Hz. At standard gravity its length is 0.994 m.
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