Explain the phenomenon of total internal reflection. state the condition for total internal reflection
Answers
Answer:
Total internal reflection is an optical phenomenon that occurs when a ray of light strikes a medium boundary at an angle larger than the critical angle with respect to the normal to the surface. The conditions necessary for the phenomena to take place are: Light should travel from denser medium to the rarer medium.
Explanation:
(a) Total internal reflection: It is the phenomenon when a ray of light travelling in a denser medium, is incident at the surface of a rarer medium such that the angle of incidence is greater than the critical angle for the pair of media, the ray is totally reflected back into the denser medium.
(b) The two necessary conditions for total internal reflection are: i.The light must travel from a denser medium to a rarer medium. ii. The angle of incidence must be greater than the critical angle for the pair of media.
(c) When incidence angle is more than critical angle i.e., in case of total internal
