Question

verify that for a light ray falling on a glass slab , its angle of emergence equals the angle of incidence​

Answer 1

sin i / sin r =n^2/n ^1

sin r /sin e =n^1/n^2

on multiple the above two equation we get

sin I / sin e =1

sin I =sin e

hence, the angle of incidence is equal to the angle of emergence..

Explanation:

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