Question

what is the reflection and refrection of light with their laws

Answer 1

Reflection is just as you might imagine: rays of light that are deflected by a surface (perhaps being sent back toward their source) are reflected. If you've ever looked in a mirror, you've looked at light that has been reflected by a surface (the mirror). Refraction is a slightly less intuitive concept, but it has an effect on everyday life. If you've ever noticed that a straw in a glass of water looks (from certain angles) like it is bent, or if you've ever seen a mirage on the road, then you've seen the effects of refraction. Refraction is the "bending" of light rays resulting from changes in the characteristics of the medium through which the rays are traveling. Two very simple formulas govern reflection and refraction in geometrical optics.

 

First, we consider reflection, as shown in the diagram below for a light wave striking a surface. We identify the incoming ray as the incident ray and the outgoing ray as the reflected ray. Concomitantly, the angle θi that the incoming ray makes with a line (dashed in the diagram) normal to the surface is called the angle of incidence. The angle θr for the reflected ray is called the angle of reflection.




 

The law of reflection states that the angle of incidence is equal to the angle of reflection, or, stated mathematically,

Answer 2

Answer࿐

Laws of reflection:-

1st law:-The incident ray, the reflected ray,and the normal at the point of incidence lie on the same plane.

2nd law:- The angle of incidence is equal to the angle of reflection.