Question

What is the frequency (in reciprocal seconds) of electromagnetic radiation with a wavelength of 1.07 cm?

Answer 1

If the electromagnetic radiation is travelling in vacuum, the velocity of the wave should be 3×10^8 m/s
Using the wave formula,
Velocity=wavelength×frequency,
frequency=(3×10^8)/(0.0107)

Answer 2

Answer : The frequency of electromagnetic radiation will be
`2.804* 10^(10)s^(-1)`

Explanation :

As we are given the wavelength = 1.07 cm

conversion used :
`(1m=100cm)`

So, wavelength is
`1.07* 10^(-2)m`

The relation between frequency and wavelength is shown below as:

`Frequency=(c)/(Wavelength)`

Where, c is the speed of light having value =
`3* 10^8m/s`

So, Frequency is:

`Frequency=(3* 10^8m/s)/(1.07* 10^(-2)m)`

`Frequency=2.804* 10^(10)s^(-1)`

Therefore, the frequency of electromagnetic radiation will be
`2.804* 10^(10)s^(-1)`