Question

A ray of light of wavelength 540nm travelling in air is incident on a slab of transparent material is 1.47. Calculate the wavelength of light in the material

Answer 1

The wavelength in the medium is λ=λ_0/n, where λ_0 is the wavelength of the light in air and n is the refractive index of the medium.

Since it is given that λ_0=540 nm and n=1.47, we obtain

λ=(540 nm)/1.47=367.35 nm

The wavelength in the medium is λ=λ_0/n, where λ_0 is the wavelength of the light in air and n is the refractive index of the medium.

Since it is given that λ_0=540 nm and n=1.47, we obtain

λ=(540 nm)/1.47=367.35 nm