Calculate the time period if 20 oscillations take place in 40 seconds
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As we know A Time period (denoted by 'T' ) is the time needed for one complete oscillation.
20 oscillations take 40 seconds.
1 oscillations take (40/20) = 2 seconds.
Therefor time period is 2 seconds.
Frequency is inverse of time period i.e. 1/2 = 0.5
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