Question

A ray of light is travelling from glass to air. The angle of incidence in glass is `35^(@)`, and angle of refraction in air `60^(@)`. What is the refractive index of glass w.r.t. air ?

Answer 1

Correct Answer - 1.51
Here, `i= 35^(@), r = 60^(@), .^(a)n_(g) = ?`
From `.^(a)n_(g) = (sini)/(sinr) =(sin60^(@))/(sin35^(@)) = (0.866)/(0.5736) = 1.51`