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Where should a person stand straight fro...

Where should a person stand straight from the pole of a convex mirror of focal length 2.0 m on its axis, so that the image formed become half of his original height?

A

`-2.60` m

B

`-4.0` m

C

`-0.5` m

D

`-2.0`m

Text Solution

Verified by Experts

The correct Answer is:
D
(d) Given, m= + `1/2` , f= 2 m =200 cm, u = ?
`therefore` Magnification, `m=f/(f-u)`
`rArr+1/2=200/((200-u))`
`rArr 200-u=400rArru=-200 cm`
`rArr u=-2 m`
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