Question

the angle of incidence is 20.what is the angle between the incident and the reflected ray?

Answer 1

Since ∠i=∠r , ∠r=20°
The required angle=
∠i+∠r=20°+20°=40°
Ans: The angle between the incident and reflected rays is 40°.
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Answer 2

We r given angle i=20 According to the law of reflection Angle of incidence is equal to angle of reflection. Thus angle r= 20 Now angle formed between incident and reflected ray= angle i+ angle r. Thus, measure of d angle =20+20=40