Question

A simple pendulum makes 20 oscillations in 20 seconds. What is the time period and

frequency of its oscillation?​

Answer 1

Frequency  = no. of oscillations/time taken
                     = 20/20
                     = 1 oscillations per second(1 Hz)

Time Period = time taken/no. of oscillations
                     = 20/20
                     = a complete oscillation takes 1 second