Question

The magnification produced by spherical mirror of f length 20 cm is +2. Then find:
a)Nature of image
b)Nature of mirror
c)Image distance

Answer 1

Magnification: It is the ratio of image size to the object size.

(a)
Nature of the image: Erect and virtual -- since the magnification is positive

(b)
Nature of mirror: Convex

(c)

Image distance = (magnification) (object distance)
= (2) (20)
=40 cm