A light wave has a frequency of (4 10¹⁴ ~Hz ) and a wavelength of (5 10⁻⁷ ~m ) in a medium. The refractive index of the medium is

Step-by-step solution

Frequency of light wave, (v=4 10¹⁴ ~Hz ) Wavelength, ( _m=5 10⁻⁷ ~m ) Wavelength of light wave in air ( aligned _ air & = Velocity of light in air Frequency of light = 3 10^8 4 10¹⁴ & =7.5 10⁻⁷ ~m aligned ) ( ) Refractive index of medium is given as ( = _ air _ medium = 7.5 10⁻⁷ 5 10⁻⁷ =1.5 )