00:02
In this question, we are looking at an optical fiber.
00:05
So in the optical fiber, there's a glass core.
00:10
There's also cladding.
00:27
So glass, cladding, the refractive index of glass is 1 .5.
00:40
The refractive index of the cladding is given to be one.
00:47
1 .48, sorry, the effective index of the glass is given to be 1 .6.
00:54
Okay, so we want to find out the maximum angle between the light ray and the wall of the core.
01:01
If the ray is to remain inside the core, okay...