Question

radius of curvature of a spherical mirror is 30 cm it's focal length is.... cm​

Answer 1

Given :-

• Radius of curvature of spherical mirror = 30 cm.

To find : Focal length

$\large\bf\underline\purple{SolutioN}$

We know that,

✣ Focal length = Radius of curvature/2

↦Focal length = 30/2

↦Focal length = 15 cm

Hence , Focal length is 15 cm.