00:01
Were given that later with the frequency of this hurts, travels in a block of blood.
00:05
There's an index of refraction at 1.52.
00:08
So whether we will into the light in vacuum and in the class.
00:12
All right.
00:12
So first uh there's a concept definitely.
00:16
We know that the frequency remains the same.
00:19
Doesn't matter whether the medium medium changes or not.
00:22
The frequency remains the same.
00:23
But we are interested in finding the speed and uh the medium in other medium which is the class because in vacuum, you know the speed.
00:32
But in glass we don't know.
00:33
So we know that there is a formula that reflected the next end is given by the speed of the light.
00:39
Is and why can't we just see over the speed of the light in that medium? so from this we can find the speed of light in that medium is c.
00:48
Or and she is the speed of right? so that's three times generates 28 and and has already given us 1.52.
00:55
So if you simplify this.
00:57
3/1 0.52, we have 1.97.
01:02
So this is 1.97 times 10.
01:05
Raised to eight meter possesses the required speed.
01:08
And and that particular medium...