Question

radius of a curvature of a spherical mirror is 90 cm find its focal length​

Answer 1

Answer:

Hence, the focal length of the given spherical mirror is 45cm. => f = 45cm. Hence, the focal length of the given spherical mirror is 45cm.

Answer 2

Answer:

Radius of curvature (R) = 90 cm

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

R= 2f

f= R/2

f = 90 / 2

f = 45

Hence, the focal length of the given spherical mirror is 45cm

Explanation:

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