Question

state the laws of reflection. Describe an activity to show that incident ray,
reflected ray and the normal, at the point of incidence, all lie in same plane.​

Answer 1

Answer:

Law 1:- Angle of incidence=Angle of reflection

Law 2:- Normal, Incident ray and Reflected ray lie on the same plane.

Activity:-

Materials Needed:-

1. Mirror

2. Torch

3. Papers

Procedure:-

1. Make a hole in the centre of the paper.
2. Take another sheet and draw a Normal.
3. Place a mirror on a table vertically.
4. Attach the paper with the Normal to the mirror.
5. Now, light a torch on the mirror through the small hole such that the ray of light falls on the normal at the bottom of the mirror.

This activity shows that the incident ray,

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

Answer 2

Answer:

Explanation: angle of the incidence is equal to the angle of reflection

Incidence ray reflected ray and normal to the reflection surface at point of incidence lie in the same plane

Activity