Write any two rules for making ray diagrams for spherical mirrors.

What is a spherical mirror?

Define principal axis of a spherical mirror.

Write the sign conventions for spherical mirrors.

An image Y is formed of a point object x by a lens whose optic axis is AB as shown in Figure. Draw a ray diagram to locate the lens and its focus. If the image Y of object X is formed by a concave mirror (having the same optic axis AB) instead of lens, draw another ray diagram to locate the mirror and its focus. Write down the steps of construction of the ray diagrams.

(a) If the image formed by a mirror for all positions of the object placed in front of it is always diminished, erect and virtual, state the type of the mirror and also draw a ray diagram to justify your answer. Write one use such mirrors are put to and why? (b) Define the radius of curvature of spherical mirrors. Find the nature and focal length of a spherical mirror whose radius of curvature is +24 cm.

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.

A convex mirror of radius of curvature 20 cm is shown in figure. An object O is placed in front of this mirror. Its ray diagram is shown. How many mistakes are there in the ray diagram (AB is principal axis)

(a) With the help pf a ray diagram , show how a concave mirror is used to obtain an erect and magnified image of an object . (b) Using the ray diagram below , obtain the mirror formula and the expression for linear magnification.

The geometrical centre of a spherical mirror

State the direction of incident ray which after reflection from a spherical mirror retraces its path. Give a reason to your answer.