Question

The wavelength of sound in air is 10 cm. its frequency is, (given velocity of sound = 330 m/s)

Answer 1

wavelength=10cm=0.1m
velocity=330m/s
velocity=frequency ×wavelength
frequency=330/0.1=3300HZ

Answer 2

Answer:

The frequency of the sound is $3.3\times10^{-3}\ Hz$

Explanation:

Given that,

Wave length of sound in air = 10 cm

Velocity of sound = 330 m/s

We need to calculate the frequency

The frequency is defined as,

$f = \dfrac{v}{\lambda}$

Where, v = velocity of sound

$\lambda$= wave length

Put the value into the formula

$f = \dfrac{330}{10\times10^{-2}}$

$f =3300\ Hz$

$f=3.3\times10^{-3}\ Hz$

Hence, The frequency of the sound is $3.3\times10^{-3}\ Hz$