Question

1. Explain the reflection of light from plane mirror? Important terms related to reflection of light.

2. What are the laws of reflection? Explain.

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Answer 1

Answer:

1. Reflection - definition

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.

2. Reflection is when light bounces off an object. If the surface is smooth and shiny, like glass, water or polished metal, the light will reflect at the same angle as it hit the surface. This is called specular reflection. ... For a smooth surface, reflected light rays travel in the same direction.

Explanation:

I hope it's helps you

Answer 2

1. Reflection of light from plane mirror:

[Note - View the attachment for better understanding of reflection of light from plane mirror]

Incident ray : It is the ray of light falling on the surface of a mirror.

Point of incidence : It is the point at which the incident ray falls on the mirror surface.

Reflected ray : It is the ray of light which is sent back by the mirror from the point of incidence.

Normal : It is a line drawn perpendicular or at the right angle to the mirror surface at the point of incidence.

Angle of incidence : The angle made by the incident ray with the normal is called angle of incidence. It is denoted by ∟i.

Angle of reflection : The angle made by the reflected ray with the normal at the point of incidence is called angle of reflection. It is denoted by ∟r.

Object distance : It is the distance from mirror to object. It is denoted by 'u'.

Image distance : It is the distance from mirror to image. It is denoted by 'v'.

2. The laws of reflection are :

The angle of incidence and the angle of reflection are equal. ∟i = ∟r

Incident ray, reflected ray and the normal drawn at the point of incidence to the reflecting surface, lie in the same plane. These two laws are applicable to both plane and curved mirrors$.$