Question

State the condition at which total internal reflection occurs. 

Answer 1

The two essential conditions for total internal reflection: 

1. Incident ray should travel in denser medium and refracted ray should travel in rarer medium.

2. Angle of incidence (i) should be greater than the critical angle for the pair of media in contact. 


HOPE THIS WILL HELP YOU!!!!!

Answer 2

Answer:

HeyaMate..!

$\huge{\fbox{\fbox{\blue{\mathfrak{Answer\:Given }}}}}$

There are two conditions for total internal reflection of light to take place :

(1) Light has to travel from denser medium to rarer medium but not vice-versa.

(2) Critical angle of the medium θ c =

${sin}^{ - 1} ( \frac{nrarer}{ndencer} )$

where n is the refractive index.

Angle of incidence θ must be greater than the critical angle of medium θc .