Question

how to find if the focal length of spherical mirror is negative or positive?​

Answer 1

We should measure the focal length from the pole. If the focal length is in the direction of incident ray we must take it as positive, and if the focal length is opposite to the direction of incident ray we must take it as negative.

PLEASE MARK BRAINLIEST

PLEASE FOLLOW ME

Answer 2

_/\_

hey mate here is your ans of your qun

i hope it will help u little bit to understand ......