00:01
Here in this given problem, the ray of light is passing from one transparent medium to another.
00:13
This is the first transparent medium having the index of refraction n1, angle of incidence theta i.
00:26
This is n2 and it is given that n2 is less than a fraction.
00:32
So the ray of light will deviate away from the normal in the second medium, making this angle of refraction theta r.
00:46
Now in the first part of the problem, theta i is given to be equal to zero degree.
00:54
So, for this normal incidence, refraction will fail.
01:18
Refraction will fail means the ray of light will not bend, means theta r will also be equal to theta i, means zero degree.
01:31
So we can show it here in this diagram.
01:36
This is the interface separating two different medium...