Question

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

i. S1 only

ii. S1 and S2 only

iii. S2 and S3

iv. all the three surfaces​

Answer 1

Answer:

2 . S1 and S2 only

Explanation:

Because I don't have this concept clear but I can read this somewhere I don't know is right wrong . i have try only. so hope this right answer .

Answer 2

Answer:

i) S 1 only .

here , the other two surfaces are rough so , both the angle never be equal.

S 1 is smooth so , angle of incidence = angle of reflection .