Question

Swarali found that the light ray travelling from denser medium to rarer medium goes away from the normal. If the angle of incidence is raised, angle of refraction goes on increasing. However after certain value of angle of incidence the light ray is seen to return back into the denser medium

1) What is the specific value of angle i called?

2) What is the process of reflection of incident ray into denser medium called?

3) Draw diagram of observation made by Swarali.

Answer 1

Answer:

there is not any specific value of angle eyes but this phenomenon is called total internal reflection