A pendulum has a time period of 1.5 s. So, it takes to complete 7 oscillations.

9.2 s

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10.5 s

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8.7 s

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Solution

The correct option is B $10.5 s$
Time taken to complete one oscillation = $1.5 s$
To complete $7$ oscillations, it would take = $1.5 s \times 7 = 10.5 s$

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A simple pendulum takes 32 s to complete 20 oscillations. What is the time period of the pendulum?

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