A student very cautiously traces the path of a ray through a glass slab for different values
Channel: Doubtnut
Date: 2020-07-26

A student very cautiously traces the path of a ray through a glass slab for different values of the angle of incidence `(/_i)`. He then measures the corresponding values of the angle of refraction `(/_r)` and the angle of emergence `(/_e)` for every value of the angle of incidence. On analysing these measurements of angles, his conclusion would be