Light travels at in glass

PHYSICS · Subjective · CBSE · Physics · Light — Reflection and Refraction · Light — Reflection and Refraction

Problem

Light travels at

2.0\times10^8\,\text{m s}^{-1}

in glass. If a ray is incident from air on a glass surface at an angle of

45^\circ

, calculate the angle of refraction in glass.