Question

For a wave propagating in a medium, identity the property that is independent of the others. 

(a) velocity 

(b) wavelength 

(c) frequency 

(d) all options depend on each other.

Answer 1

Correct option (c) frequency   

Explanation:

As v = vλ  

velocity = frequency x wavelength.

When light is travelling in a medium, v is assumed to be the same and the velocity of light in the medium is less. λ  gets adjusted so that C'/λ'   = v. Here v is independent.

It is frequency of light i.e. energy that is a constant.