Question

30. what do you mean by refractive index? Show with diagram how the path of light changes when a
ray of light from air enters a glass slab obliquely. Also find the speed of light in glass if the refractive index
of glass is 1.50​

Answer 1

Explanation:

1. ratio of Speed of light in a given pair of media

Answer 2

Answer:

When light rays travel from optically rarer medium to denser medium then they bend towards normal. In this case angle of refraction is smaller than angel of incidence. When light rays travel from air into glass or from air into water, it bends towards normal.

Explanation:

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