Question

The focal length of a mirror is 15 cm, then what is the radius of
curvature of the mirror ?

Answer 1

Given, f = 15 cm  

We know  for a mirror, R = 2f

R=2×15cm

R=30cm

Answer 2

Question asked :- The focal length of a mirror is 15 cm, then what is the radius of curvature of the mirror ?

Solution:-

Given, f = 15 cm

We know for a mirror,

R = 2f

R=2×15cm

R=30cm

Hence , Radius of curvature is 30 cm