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An erect image is seen of $\large\frac{1}{5} $ th the height of the object kept at a distance of $20 \;cm$ from a mirror. The mirror must be :

(a)plane mirror

(b)concave mirror

(c)convex mirror

(d)Plano concave mirror

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1 Answer

Small image is formed only by convex mirror , plane mirror forms image of same size, concave mirror forms image bigger then object.
Then it is the convex mirror.
Hence 'c' is the correct option
 

 

answered Jan 17, 2014 by meena.p
edited Jul 15, 2014 by thagee.vedartham
 

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