Question

What is the frequency of light for which the wavelength is 7.1 × 102 nm?

Answer 1

Frequency,
`f=4.22* 10^(14)\ Hz`

Step-by-step explanation:

Given that,

Wavelength of the light,

`\lambda=7.1* 10^2\ nm=7.1* 10^2* 10^(-9)\ m\\\\\lambda=7.1* 10^(-7)\ m`

We need to find the frequency of light. We know that light is an electromagnetic wave. It moves with the speed of light. So,

`c=f\lambda`

f is the frequency of light

`f=(c)/(\lambda)\\\\f=(3* 10^8\ m/s)/(7.1* 10^(-7)\ m)\\\\f=4.22* 10^(14)\ Hz`

So, the frequency of light is
`4.22* 10^(14)\ Hz`. Hence, this is the required solution.