Question

under what condition does total internal reflection take place

Answer 1

ray should pass from denser to a rarer medium.

Answer 2

Here is ur answer :-

For total internal reflection to occur, two conditions must be met: The index of refraction must decrease across the boundary in the direction of light Refraction . The angle of incidence of the light ray must exceed the critical angle  of the interface.


I hope it helps u dear ☺️....