Question

if the angle of incidence is 45 deggree then the angle of reflention is ​

Answer 1

Answer:

angle of reflection=45°

Explanation:

angle of reflection=angle of incidence

45°=45°

Answer 2

Answer:

From Snell’s Law,

Sin r=u sin i……..(eqn 1)

if i=45°,then

sin i=1/√2

Now, it depends on ‘u' of medium through which light ray passes. So, if medium is air,for example, u=1. ,ie ,i=r (from 1).

But if water (u=1.33). ,glass (1.5) etc.

thus, we can find required value.

Here,u=refractive index of medium

r=angle of refraction

i=angle of incidence...