Q32 of 40 Page 1

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

For refraction of light through a glass slab angle of incidence = angle of emergence. Since light passes from rarer medium i.e. air to the denser medium i.e. glass so it will bend towards normal hence angle of refraction will be less than the angle of incidence or angle of emergence.

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