Question

A convex mirror is carved from a sphere of radius 60 cm. What will be the focal length of the mirror? ​

Answer 1

Answer:

Given,

Radius of curvature,R= 60cm

We know that,

Focal length= Radius of curvature ÷2

= 60cm ÷2

= 30cm

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Answer 2

Answer:

The radius of curvature of the mirror = 60 cm

Thus,the focal length = 60/2 = 30 cm