Question

If the period of a wave is 0.05 s, then what is its frequency?

Answer 1

Frequency = 1/time period = 1/0.05 = 20s^-1. 

Answer 2

20
`s^(-1)`

Solution:

We Know that frequenency is defined as the number of times something happens within a specific period of time.

Frequency is related with time by following formula

Frequency=
`(1)/(T)`

Here T is time period=.05

Therefore,

Frequency=
`(1)/(.05)`

Frequency=20
`s^(-1)`