Question

what is the frequency that corresponds to a light ray of wavelength 450 NM when travelling through a glass refractive index 3/2

Answer 1

4.4x 10^14 Hz ...........

Answer 2

We will need to know one unique property of a wave in order to solve this. Which frequency doesn't change with the medium.

In this question, frequency of the light want change when it passes through the glass.

we can use V=fλ to simply solve this

Speed of the light (V) = 3 x 10^8 m/s

Wave Length (λ) = 450 x 10^-9 m

f = V/λ

f = 6.67 x 10^14 Hz