Question

Write the condition for TIR​

Answer 1

please mark my answer as a brainalist please please

For total internal reflection to occur, 2 conditions must be met:
1. The index of refraction must decrease across the boundary in the direction of light refraction.
2. The angle of incidence of the light ray must exceed the critical angle of the interface.

I hope it helps you!!!

Answer 2

mainly there are two conditions for TIR

1. the ray of light must travel through denser to rarer medium

2. angle of incidence must be higher than the critical angle