Question

Find the total deviation produced the following ray diagram.

PLZ ANSWER THIS!!!!!

I WILL MARK AS BRAINLIST ​

Answer 1

First of all , see the attached diagram very carefully !

• $\delta$ is our total deviation.

• The angle made by emergent ray with the incident ray gives us the deviation angle.

Now, I have drawn BD $\perp$ CE.

Now, CE || BZ and EB is trasversal:

$\angle$ FEB +$\angle$ EBY = 180°

$\implies \delta$ + 60° = 180°

$\implies \delta$ = 120°.

So, net deviation is 120°.