The path of a ray of light coming from air pa | vedclass

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Question

(B) When a light ray travels from a rarer medium (air) to a denser medium (glass),it bends towards the normal at the point of incidence.When the light

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$B$

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(B) When a light ray travels from a rarer medium (air) to a denser medium (glass),it bends towards the normal at the point of incidence.When the light ray emerges from the denser medium (glass) back into the rarer medium (air),it bends away from the normal.In figure $B$,the ray bends towards the normal upon entering the glass slab and bends away from the normal upon exiting it,which correctly follows the laws of refraction.Therefore,the path shown in $B$ is correct.

The path of a ray of light coming from air passing through a rectangular glass slab traced by four students are shown as $A, B, C$ and $D$ in the figure. Which one of them is correct?

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