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Question

A boy stands straight in front of a mirror at a distance 30 cm away from it. He sees his erect image whose height is (15)th of his real height. The mirror he is using is :

A
plane mirror
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B
convex mirror
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C
concave mirror
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D
plano-concave mirror
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Solution

The correct option is A convex mirror
Only a convex mirror can produce an erect, virtual and diminished image of an object because in question it is given height of image is 15th of real height.
vu=M<1
v<u
1v>1u
1v+1u=1f
1f>1u+1u>0
f>0
Convex mirror

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