Explain the meaning of the terms focus and focal length in case of a convex mirror, with the help of , suitable ray diagram.

Focal length of a convex mirror is 10 cm

Focal length of a concave mirror is

Define the terms focus and focal length of a concave mirror. Draw diagram to illustrate your answer.

What is meant by lateral inversion of an image in a plane mirror? Explain it with the help of a ray diagram.

The focal length of a convex mirror is 20 cm its radius of curvature will be

State the two convenient rays that are chosen to construct the image by a spherical mirror for a given object? Explain your answer with the help of suitable ray diagrams.

Explain the meaning of the term 'least count of an instrument' by taking a suitable example.

What is meant by lateral inversion of an image in a plane mirror ? Explain it with the help of a diagram.

To construct a ray diagram, we use two rays which are so chosen that it is easy to know their directions after reflection from the mirror. List two such rays and state the path of these rays after reflection in case of concave mirrors. Use these two rays and draw ray diagram to locate the image of an object placed between pole and focus of a concave mirror.

By Plotting (1)/(v) verus (1)/(u) focal length of a convex mirror can be found .