Total internal reflection takes place when the light ray travels from ______

Question

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Answer 1

Total internal reflection always place when a light ray travels from an optically denser medium to a rarer medium.
For total internal reflection, angle of incidence must be greater than the critical angle,

$C = sin^{- 1} \frac{1}{μ}$ where, $μ$ =refractive index of denser medium relative to rarer medium.

Answer-(C)

Answer 2

Total internal reflection always place when a light ray travels from an optically denser medium to a rarer medium.

For total internal reflection, angle of incidence must be greater than the critical angle,

C = sin^{- 1} \frac{1}{μ}

where,

μ

=refractive index of denser medium relative to rarer medium.

Answer-(C)