Question

Answer this fast, important for board. "What is total internal refraction and what are the conditions required for it? Give one example"
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Answer 1

Heyaa mate

Total internal reflection is the phenomenon which occurs when a propagated wave strikes a medium boundary at an angle larger than a particular critical angle with respect to the normal to the surface.

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.

Answer 2

Hey mate....

HERE IS YOUR ANSWER......

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$\huge{\bold{\green{TIR}}}$ Total internal reflection..

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It is the is that kind of reflection in which the ray bounce back in the same medium from which it came...

#Condition required....

The incident angle is much larger than the critical angle..

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