00:01
So let us start with the concept which we are going to use here for this question.
00:06
So since we know the snell's law which states that the n1 sine of theta 1 will be equals to n2 sine of theta 2 where n1 and n2 are the refractive indices of the two meteors and theta 1 theta 2 will be the corresponding incident and refraction angles.
00:32
So according to equation let's suppose this is the snell's limit word class.
00:37
So first the light incident on it by making an angle of 60 degree with respect to this perpendicular and let's say this point to be as a.
00:48
So it gets refracted by some angle with respect to this vertical axis let's say to be as theta of a.
00:58
Then again it's try to second side of that glass okay and get out of this here so it will again get refracted okay at an some angle with respect to this vertical.
01:12
So let's say this point to be as p.
01:14
So obviously this angle will be theta of p.
01:17
Now refractive index for this glass is given and is equals to 1 .5 and obviously for air the refractive index will be 1.
01:27
So first of all we need to calculate this angle of refraction.
01:33
So by using this snell's law in the first part we can clearly say that the n1 sine of what that is 60 degree should be equals to the n2 sine of what that is theta of a...