The frequency of a light wave in a material is 2 10¹⁴ ~Hz and wavelength is 5000 Å . The refractive index of material will be

Step-by-step solution

Using, = C v Here, c=3 10^8 ~m ~s ⁻¹v=v =2 10¹⁴ ~Hz 5000 10⁻¹⁰ ~m =1 10^8 ~m ~s ⁻¹ = 3 10^8 ~m ~s ⁻¹ 1 10^8 ~m ~s ⁻¹ =3