When a light ray moves from denser to rarer medium, which of the following conditions results in total internal reflection?

Correct option is C

• Critical angle is the angle of incidence above which total internal reflection occurs.
• The critical angle depends on the refractive indices of the two media involved. It is defined as $$\sin(i_c) = \frac{n_2}{n_1}$$​​​, where $$n_1$$​ and $$n_2$$​ are the refractive indices of the denser and rarer medium.
  
• The critical angle depends on the refractive indices of the two media involved.
• Total internal reflection is used in devices like optical fibers and prisms.