If the focal length of a convex mirror is 25 cm, what is its radius of curvature?

Given,

Focal length = $f$ = 25 cm

To find : $R$ = Radius of curvature

Solution

We know that the radius of curvature of a spherical mirror is twice its focal length.

Mathematically it is given as-

$R=2f$

Now, putting the given value we get-

$R=2\times 25$

$R=50cm$

Hence, the radius of curvature of the convex mirror will be 50cm.