A pendulum makes 135 oscillations in a duration of 15 seconds. The time period of the pendulum is .

0.3535 s

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0.1111 s

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0.0808 s

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Solution

The correct option is B $0.1111 s$
Given: The pendulum makes 135 oscillations for 15 seconds.
$⟹$ No. of oscillations per second, $n = \frac{135}{15} = 9 s^{- 1} or 9 H z$
$∴$ Frequency, $n = 9 H z$ .
Time period, $T = \frac{1}{n} = \frac{1}{9} = 0.1111 s$ .

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A pendulum makes 135 oscillations in a duration of 15 seconds. The time period of the pendulum is .

The correct option is B 0.1111 sGiven: The pendulum makes 135 oscillations for 15 seconds. ⟹ No. of oscillations per second, n=13515=9 s−1 or 9 Hz ∴ Frequency, n=9 Hz. Time period, T=1n=19=0.1111 s.

The correct option is B $0.1111 s$
Given: The pendulum makes 135 oscillations for 15 seconds.
$⟹$ No. of oscillations per second, $n = \frac{135}{15} = 9 s^{- 1} or 9 H z$
$∴$ Frequency, $n = 9 H z$ .
Time period, $T = \frac{1}{n} = \frac{1}{9} = 0.1111 s$ .