Question

Write the relation between angle of incidence,angle of emergence,angle of deviation and angle of prism

Answer 1

The angle of incidence is equal to angle of refraction only if the angle od deviation is 0.

This is practically impossible since, when light enters a medium from another medium it HAS TO UNDERGO REFRACTION. So angle of minimum deviation i never zero but it can be a ver very small value.

And angle of incidence is never equal to angle of refraction, if the light undegoes minimum deviation. But the angle of incidence is equal to the angle of emergence.

But theoritically, if we take angle of deviation as zero,

then d=i+e-A

i=e for minimum deviation.

so,d=2i-A

A=r1+r2

r1+r2, for minimum deviation.

So A=2r.

d=2i-2r

ASSUMING d=0, 2i=2r,

so i=r.

               THANKS FOR ASKING QUESTION

Answer 2

Answer:Violet colour has the frequency

Explanation: hope it helped