For a glass slab

PHYSICS · Multi-part · CBSE · Physics · Ray Optics and Optical Instruments · Ray Optics and Optical Instruments

Problem

For a glass slab, the critical angle at the glass–water interface is

48^{\circ}

, while at the glass–air interface it is

42^{\circ}

. Calculate: (i) the refractive index of glass (ii) the refractive index of water