Monochromatic light is incident on a glass prism of angle A. If the refractive index of the material of the prism is μ, a ray, incident at an angle θ, on the face AB would get transmitted through the face AC of the prism provided:

Question

G1 Physics · Accepted Answer

At the second prism face, transmission requires r₂ < C, where C = sin⁻¹(1/μ). Since r₁+r₂=A, we need r₁ > A-C. At the first face sinθ = μ sin r₁. Therefore θ > sin⁻¹{ μ sin[A - sin⁻¹(1/μ)] }. Hence option C.