Define focal length.

Definition

The distance between the pole and the principal focus is called the focal length (f) of a spherical mirror.

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Chapter 3: Light - Exercises [Page 34]

Chapter 3 Light
Exercises | Q IV. 1. | Page 34

Define the following term in the context of spherical mirrors:- Centre of curvature

What is a spherical mirror?

In each case (a) and (b), draw reflected rays for the given incident rays and mark focus by the symbol F.

Name the kind of mirror used to obtain:

A virtual and enlarged image

An object is placed at 4 cm distance in front of a concave mirror of radius of curvature 24 cm. Find the position of image. Is the image magnified?

Select the correct option:

Which mirror is used in periscope?

For a spherical mirror, ______ is true.