The frequency of a light wave in a material is 2 × 10 14 H z and wavelength is 5000 A ∘ . The refractive index of material will be

Question

The frequency of a light wave in a material is 2 × 10 14 H z and wavelength is 5000 A ∘ . The refractive index of material will be, 1 . 40, 1 . 50, 3 . 00, 1 . 33

MARKS App · Accepted Answer

The velocity of light water in the material is v = v λ … i Refractive index of the material is μ = c v … i i Where c is the speed of light in vacuum or air or μ = c v λ … i i i Given, v = 2 × 10 14 H z , λ = 5000 Å = 5000 × 10 - 10 m c = 3 × 10 8 m s - 1 Hence, from Eq (iii), we get μ = 3 × 10 8 2 × 10 14 × 5000 × 10 - 10 = 3.00

Search any question & find its solution

Looking for more such questions to practice?