Question

The radius of curvature of a spherical mirror is 50 cm. What is its focal length ?​

Answer 1

Answer-

The focal length of the given spherical mirror is 25cm

Solution-

We have-

Radius of curvature,

R = 50 cm

Radius of curvature of a spherical mirror

= > 2 x focal length(f)

=> R = 2f

=> f = R/2

=> f = 50/2

=> f = 25cm.

Hence, the focal length of the given spherical mirror is 25cm

Answer 2

Answer:

we know that,

radius of curvature = 2 ×focal length

so radius of curvature=50

50=2×focal length

50÷2= focal length

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