Question

The index of refraction of certain glass is is 1.5 for light whose wavelength in vaccum is 600mm what is the wavelength of this light when it passes through glass

Answer 1

Answer:

wavelength in glass=λ or wavelength in vacuum/refractive index

λ in glass=600mm/1.5

=40mm

Answer 2

Explanation:

(wavelength of light in vaccum) /(wavelength of light in other medium) = refractive index

so, 600/x=1.5

x=600/1.5=6000/15=400mm