Reflection of light

Reflection

the phenomenon of light waves bouncing off a material when it passes from one material to another

What is specular reflection

When a parallel pencil of rays is incident on a highly polished surface it is reflected in a single direction

What is diffuse reflection

When a parallel pencil of rays is incident on a irregular or rough surface and the rays are scattered in all directions

What is an angle of incidence

The angle between the incident ray and the normal

What is an angle of reflection

the angle between the reflected ray and the normal

What is the first law of reflection

the incident ray , the reflected ray and the normal lie on the plane which is perpendicular to the surface

What is the second angle of reflection

the angle of reflection is equal to the angle of incidence

Characteristics of the image formed by a plane mirror

1. position

2. size

3. nature

4. appearance

What is the formula for radius of curvature

2x focal length

What are the two methods of calculating the position and size of the image

1. graphical construction

2. analytical method

what is the linear magnification equation

m= image height/ object height