Question

A sound wave travels at 330m/s and has a wavelength of 2 m. calculate its frequency and period.

Answer 1

frequency= 165Hz

period=
`(1)/(165)`

Explanation:

1. To calculate the frequency using the formula:

f = v/λ

where,

f=frequency (what the question asked)

v=speed of wave (given in the question=330m/s)

λ=wavelength (given in the question=2m)

SO,

`f=(330)/(2)`

= 165Hz

2. To calculate the period use the formula:

since
`f=(1)/(T)`

therefore,
`T=(1)/(f)`

where,

f= frequency (what we solved above=165Hz)

T= period (what the question asked)

SO,

`T=(1)/(165)`