Question

A certain part of the electromagnetic spectrum ranges from 200 nm to 400 nm. What is the lowest frequency associated with this portion of the spectrum?

Answer 1

the lowest frequency is
`7.5* 10^(14) Hz`

Step-by-step explanation:

In the question it is given that wavelength(L) in the range of 200μm to 400μm.

let ν be frequency of wave v velocity = 3\times 10^8

velocity v= Lν

therefore ν=
`(v)/(L)`

frequency ν be lopwest when L will be heighest

ν(lowest)=
`(3* 10^8)/(400* 10^-9)`

ν=
`7.5* 10^(14) Hz`