Question

if a ray of light is incident on a plane mirror such that it makes an angle of 30 degree with the mirrorr, then what will be the angle of reflection

Answer 1

Answer:

60 degree

Explanation:

Let angle of incidence be /i.

Since normal makes an angle of 90 degree with the mirror,

So, /i + 30 degree (given) = 90 degree

     /i = 90-30=60 degree.

/i = /r (angle of reflection) [By laws of reflection]

Therefore, angle of reflection is 60 degree.