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(a) What is focal length of a convex mir...

(a) What is focal length of a convex mirror of radius of curvature `20 cm`?
(b) What is radius of curvature of a mirror of focal length `- 50 cm` ?

Text Solution

Verified by Experts

(a) Here, `f = ? R = 20 cm`
`f = ( R)/(2) = (20)/(2) = 10 cm`
(b) Here, `f = -50 cm, R = ?`
`R = 2f = 2 (-50) = -100 cm`.
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