Question

Find the angle of deviation if the light which is incident on a flat surface makes an angle of 15° with the surface.

Answer 1

Heya....!!!

_______________________

In a plane mirror the angle of deviation is given by :-

=> 180° - 2∠i

Here ‘ ∠i ‘ is the angle of incidence.

According to the question, the incident Ray makes an angle of 15° with surface.

We know that the angle between Normal and surface is 90° , So the angle of incidence will be :-

⇒ ∠i = 90 - 15

Angle of incidence ∠i = 75°

Now , Angle of deviation = 180 - 2∠i

⇒ 30° . is the required answer

===========================

Hope It Helps You. ^_^

Answer 2

Hi , there !!!


angle of deviation is in this case Will be :- 30°
here the symbol Delta represent the angle of deviation


look this attachment :-


hope it helps !!!


thanks !!


Ranjan Kumar !!