A transparent liquid is in contact with a glass block of refractive index
PHYSICS · Subjective · CBSE · Physics · Ray Optics and Optical Instruments · Ray Optics and Optical Instruments
Problem
A transparent liquid is in contact with a glass block of refractive index 1.52. The critical angle for light travelling from the glass into the liquid is found to be 68∘.
(a) Calculate the refractive index of the liquid.
(b) A ray inside the liquid strikes the liquid–glass boundary at an angle of incidence of 68∘. Will total internal reflection occur? Give a reason for your answer.