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| 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 | |
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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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