Question

In total internal reflection when the angle of
incidence is equal to the critical angle for the
pair of media in contact, what will be angle of
refraction?

Answer 1

$\huge{\mathfrak{HEYA\:MATE\:!!}}$

Answer...

Refer to the attachment for the diagram.

When the angle of incidence , is equal to the critical angle , then the refracted ray grazes with the surface and forms an angle of 90° with the normal.

нσρє нєℓρѕ !❤️❤️

Answer 2

AT i=ic refracted rays grazes with surface..

So angle of refraction is 90°