Question

Explain how frequency of elctomagnetic waves in free space differs with increasing wavelength ?

Answer 1

Increasing wavelength decreases frequency.

Explanation:

Recall that, frequency is related with wavelength through,

`v=flambda`

All electromagnetic waves are just light photons, so they travel at the speed of light `c`, and so we get,

`c=flambda`

Since the speed of light in an empty space, a vacuum, is constant, we can define the equation as,

`flambda=k`

• where `k` is a constant.

or

`fprop1/lambda`

So, the frequency is inversely proportional to the wavelength. Increasing wavelength decreases frequency, and vice-versa.