A monochromatic ray of light passes from air to glass. The wavelength

1.	A monochromatic ray of light passes from air to glass. The wavelength of light in air is λ, the speed of light in air is c and in glass is ν. If the absolute refractive index of glass is 1.5, write down (a) the relationship between and ν, (b) the wavelength of light in glass.
Answer» (a) The relation between speed of light in air c and in glass v is given by c/v = =1.5 (b) The wavelength of light in glass (λ¹) μ = λ/λ¹ = λ/1.5

A monochromatic ray of light passes from air to glass. The wavelength of light in air is λ, the speed of light in air is c and in glass is ν. If the absolute refractive index of glass is 1.5, write down (a) the relationship between and ν, (b) the wavelength of light in glass.

Answer»

(a) The relation between speed of light in air c and in glass v is given by

c/v = =1.5

(b) The wavelength of light in glass (λ¹)

μ = λ/λ¹ = λ/1.5