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प्रश्न
A simple pendulum completes 40 oscillations in one minute. Find its (a) Frequency and (b) Time period.
उत्तर
(a) Frequency = Oscillations per second
= `(40/60)` s-1
= 0.67 s-1
(b) Time period = 1/frequency
= `(1/0.67)` s
= 1.5 s
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