. Light is falling on surface S1, S2, S3 as shown in Fig.16.1.
Surfaces on which the angle of incidence is equal to the angle of reflection is/are
(a) S1 only
(b) S1 and S2 only
(c) S2 and S3
(d) all the three surfaces
Answer: (d) all the three surfaces
Laws of reflection are always followed irrespective of the surface of the object hence the angle of incidence is equal to the angle of reflection.