Question

-V
The focal length of a spherical mirror is 15 cm ,its radius of curvature will be ---
a. 30 cm
b. 15 cm
c. 10 cm
d. 7.5 cm

ANS:-(D) 7.5​

Answer 1

Explanation:

The distance of centre of curvature to the pole is called radius of curvature.

Focal Length of a mirror is half the radius of curvature.

Focal Length= 1/2 15 = 7.5cm