Question

The radius of curvature of a spherical mirror is 20 cm. What is its focal length ?​

Answer 1

Answer:

10cm

Explanation:

Given-

Radius of curvature,

R = 20 cm

Radius of curvature of a spherical mirror

= > 2 x focal length(f)

=> R = 2f

=> f = R/2

=> f = 20/2

=> f = 10 cm.

Hence, the focal length of the given spherical mirror is 10 cm

Answer 2

Answer:

10cm

Explanation:

focal length = radius of curvature/2

f=20/2

f=10cm

Hope it helps u...