Question

What is the relation between focal length and radius of carvature for concave mirror? Calculate the focal length if radius of carvature is 40 cm

Answer 1

Explanation:

The distance from the pole to the focal point is called the focal length (f). The focal length of a spherical mirror is then approximately half its radius of curvature. It is important to note up front that this is an approximately true relationship.

Answer 2

Answer:

relation between focal lenght and radius of curvature

C=2f

C=40

40=2f

f = 40/2

f= 20cm

hope it help