During refraction speed of light and wavelength change. Why frequency doesn't change. Pls answer in simple words.
Asked
Active
Viewed 211 times
1 Answers
0
Light originates from a specific source, and the frequency of light emitted depends only on the characteristics of the source (how frequently the source pulsates and can send out light waves).
So the process of refraction goes something like this: let's say a torch can emit light only at the frequency of 5 Hz, this light ray travels to a glass slab, gets refracted and then the frequency remains constant = 5Hz, but the speed of light in the medium decreases.
Now, from v = fλ if the speed decreases then with frequency remaining constant, wavelength must also decrease.
