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Sahay Sir > Question Answers > JEE Mains Physics 2002-2019 Solved Video Solutions > Chapter 16 - Optics > A ray of light AO in vacuum is incident on a glass slab at angle 60∘ and refracted at angle 30∘ along OB as shown in the figure. The optical path length of light ray from A to B is :

A ray of light AO in vacuum is incident on a glass slab at angle 60∘ and refracted at angle 30∘ along OB as shown in the figure. The optical path length of light ray from A to B is :

A ray of light AO in vacuum is incident on a glass slab at angle 60∘ and refracted at angle 30∘ along OB as shown in the figure. The optical path length of light ray from A to B is :