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Question

A pendulum oscillates 20 times in 4 seconds. Find its time period

A
0.001 sec
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B
0.1 sec
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C
0.2 sec
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D
0.05 sec
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Solution

The correct option is C 0.2 sec
20 oscillation takes 4 seconds so for one oscillations takes 4/20 sec=0.2 sec

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