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

A pendulum oscillates 40 times in 4 seconds. Find its time period and frequency.
Answer:
Frequency of oscillations is defined as the number of oscillations of a vibrating body
per second. It is given by
image
The time required to complete one oscillation is known as time period. It is given by
the inverse of the frequency.
image