Q.

The focal length of a convex mirror is 20 cm its radius of curvature will be

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a

10 cm

b

20 cm

c

30 cm

d

40 cm

answer is D.

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Detailed Solution

f=R2⇒R=40 cm
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Get ₹ 1 crore* worth scholarship for JEE / NEET / Foundation
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