If the time period of a pendulum is 2 s, in how many seconds will it complete 20 oscillations?

20 s

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10 s

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40 s

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4 s

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Solution

The correct option is C 40 s
Time period of a pendulum is the time taken by the pendulum to complete one oscillation. $1 o s c i l l a t i o n t a k e s 2 s e c o n d s, 20 o s c i l l a t i o n s w i l l t a k e = 20 \times 2 = 40 s$

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