Question

To determine a waves' frequency, you must know the

A. distance it travels.
B. number of oscillations in a given period of time.
C. distance between the crest and trough.
D.height of the wave.

Answer 1

B. number of oscillations in a given period of time.

Answer 2

Answer : Frequency equals number of oscillations in a given period of time.

Explanation :

The number of oscillations in a given period of time is known as the frequency of the wave. It is denoted by
`\\u`. Its SI unit is hertz (Hz).

It is also defined as the inverse of time period i.e.

`\\u=(1)/(T)`

T is the time period.

Hence, the correct option is (B) " number of oscillations in a given period of time ".