00:01
In this problem, we have to describe laws of reflection, laws of refraction, and the refractive index.
00:10
So according to the laws of reflection, whenever any incident ray strikes any surface that's reflective, the ray bounces back such that the incident ray and the reflected rays, they make equal angles with the normal.
00:27
And this is in accordance with the first law of reflection, according to which the angle of incidence is equal to angle of reflection.
00:36
So here this is the angle of incidence and this is the angle of reflection.
00:40
And the second law, that's pretty simple and obvious as well, that the incident ray, reflected ray, and the normal.
00:48
In fact, all the rays and the normal, all at the point of incidence.
00:55
So all these are at the point of incidence, they all lie in the same plane.
01:04
So they lies in the same plane.
01:07
That's the second law of reflection.
01:11
And next we move to refraction in which the light rays bent as it changes the medium.
01:16
So we observed this phenomena as refraction and there are two laws associated with this as well...