Question

The radius of curvature of a spherical mirror is 20 cm . what is the focal length​

Answer 1

Hola!!⤵️⤵️

⭕radius of curvature = 2 × focal length

SO, focal length is:-

(20÷2)cm = 10 cm..

Answer 2

Answer:

Explanation:

Solution:Radius of curvature, R= 20 cm

Radius of curvature of a spherical mirror = 2 × Focal length (f)

R= 2f

f= R/2 = 20 / 2 = 10

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