Question

Q12. A ray of light AB strikes a plane mirror MM’ at B and is reflected along BC. Draw the ray diagram and complete the following sentences:- ⦁ The ray AB which strikes MM at B, point B is called_________. ⦁ The bounced ray BC from B is called _________. ⦁ The line BD which is perpendicular to MM’ is called the ________. ⦁ The angle between AB, _______ and BD, ________ is called the _______. ⦁ The angle between BD, _______ and BC, _______ is called the _______ .

Answer 1

Explanation:

Correct option is C).

Ray AB strikes the mirror PQ at B and gets reflected along BC according to the laws of reflection. The ray BC incident on mirror QR makes an angle 30⁰ with the mirror. So, the angle of incidence on this mirror is 90⁰-30⁰ which is 60⁰.

. Hence, the angle of reflection is also 60 .