Question

 A spherical mirror produces an image of magnification -1 on a screen placed at a distance of 30 cm from the mirror. Find a) the distance of the image from the object. b) the focal length of the mirror c) nature of the mirror. *

2 points​

Answer 1

Explanation:

Given: magnification of spherical mirror, m= -1.0

(i) Since the image is formed on the screen means that the image is real. Only concave mirror forms the real images. So, the mirror used is Concave mirror.

(ii) Magnification is given by:

so, f= -15 cm