00:01
In this question, we have a prasm assuming this diagram, and the prism has a refractive index n1, which of course depends on the color of the incident light.
00:10
And there's a surrounding material which has a refractive index n2.
00:15
Now, the refract index of n1 is listed in this table.
00:20
Now you have a beam of white light coming instantly on this vertical service of this prasm, and then it's going to be reflected by the sonneted service of this prasm.
00:30
And some light, most of the light will be into reflected, but some of the light will be reflected out into the surrounding material.
00:38
Now, in the first situation, it says only the red, orange, and yellow light reflect out.
00:45
What would be the refract index for this surrounding material? and that means, you know, red light actually is most likely to be critically, i mean, the red light most likely to reach the grid angle, right? so in other words, the red light, the reflective index should be such that the, should be such that the red light reaches a critical instrument angle, right? so in other words, our condition is loading, n1 for red light, i'll put the right here, and this times sine cita 1, and this should be equal to 1...