Question

Q No.5: State and explain laws of reflection of light what is snelis law? Draw a graph
between Sin i and sin r.
Q No. 6. What is​

Answer 1

Answer:

Reflection: Bouncing back of a light ray after hitting a surface.

Incident ray: The light ray which strikes the surface.

Reflected ray: The light ray which returns from the surface after reflection.

Normal: An imaginary line perpendicular to the surface passing from the point of contact.

Angle of incidence: Angle between the incident ray and the normal

Angle of reflection r: Angle between the reflected ray and the normal.

LAWS OF REFLECTION - LAW

concept

Laws of reflection states that:

The incident ray, the reflected ray and the normal at the point of incidence all lie in the same plane.

Angle of incidence is equal to the angle of reflection.

VERIFICATION OF LAWS OF REFLECTION - EXAMPLE

Laws of verification can be experimentally verified by drawing the trace of a ray of light before and after reflection. This can be done by passing light through a small hole in a dark room or using two thin objects (like needles/pins) to trace a straight line and observe its reflection.