Q.5 A pendulum oscillates 40 times in 4 seconds. Find its time period and frequency.

Given,
Number of oscillations = 40 times

Time taken by the oscillations = 4 seconds

Frequency of oscillation = Number of oscillations / Time taken by the oscillations

= 40 / 4

= 10 Hertz

Time period of oscillation = 1 / Frequency of oscillation

= 1 / 10

= 0.1 seconds