This document contains 10 important theory questions about spherical mirrors. It defines key terms used to describe spherical mirrors such as pole, center of curvature, radius of curvature, principal axis, aperture, principal focus, focal length and focal plane. It also derives several important relationships for spherical mirrors, including that the focal length of a concave or convex mirror of small aperture is half the radius of curvature, and the mirror formula relating the focal length to the object and image distances. Finally, it derives the magnification formula for concave mirrors and asks which type of spherical mirror is preferable for observing traffic from a car.

1. IMPORTANT THEORY QUESTIONS
Spherical Mirrors
Prepared by : Mukesh N Tekwani
Email: scitechgen@outlook.com
Sr
No Question
Marks Keyword(s)
1 What is a spherical mirror? Differentiate between a concave and convex
mirror. Draw neat diagrams of convex and concave mirrors.
3 Define
2 For spherical mirrors, define the following terms: (i) Pole, (ii) centre of
curvature, (iii) Radius of curvature
3 Define
3 For spherical mirrors, define the following terms: (i) Principal axis, (ii)
aperture, (iii) principal focus
3 Define
4 Using ray diagrams, show the position of the principal focus for (i) concave
mirror, (ii) convex mirror
2 Diagram
5 Define the terms (i) focal length and focal plane 2 Define
6 For a concave mirror of small aperture, the focal length of the mirror is half
the radius of curvature. Prove this relation. Draw a neat ray diagram.
3 Derive
7 For a convex mirror of small aperture, the focal length of the mirror is half
the radius of curvature. Prove this relation. Draw a neat ray diagram.
3 Derive
8 For a concave / convex mirror, derive the mirror formula 1/f = 1/u +1/v 5 Derive
9 Define linear magnification produced by a spherical mirror. Show that the
magnification produced by a concave mirror is m = -v/u, where u is the
object distance and v is image distance.
3 Derive
10 What type of mirror is preferable in a car for observing traffic at your back,
and why?
2 Spherical
mirror
(c)M
ukesh
N
Tekw
ani