Question

2. A ray of light is reflected by an angle of 20° from a smooth polished surface.
i. What is the angle of incidence?
ii. If the angle of incidence is doubled, by how much will the angle of reflection increase.​

Answer 1

Answer:

Angle of incidence is 20degree because angle of incidence is equal to angle of reflection

Explanation:

when angle incidence is doubled then angle of reflexion becomes twice i.e 40

Answer 2

$\huge\tt\green{♬•Answer:}$

i) Angle of reflection=Angle of incidence

So, Angle of incidence=20°

ii) If the angle of incidence is doubled, the angle of reflection will also get doubled.

That's 2x20°=40°