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The image formed by a convex mirror of f...

The image formed by a convex mirror of focal length `30 cm`. is a quarter of the object. What is the distance of the object from the mirror ?

A

30 cm

B

90 cm

C

120 cm

D

60 cm

Text Solution

Verified by Experts

The correct Answer is:
B
(b) Magnification, m`=(f)/(f-u)`
`rArr (+(1)/(4))=(+30)/(+30-u)`
`rArr` The distance of the object from the mirror,u=-90 cm
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