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Question

A concave mirror is used to focus the image of a flower on a nearby well 120cm from the flower. If a lateral magnification of 16 is desired, the distance of the flower from the mirror should be

A
8 cm
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B
12 cm
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C
80 cm
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D
120 cm
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Solution

The correct option is A 8 cm

Last distance =u Now vu=16 and v=u+120

120+uu=1615u=120u=8 cm.


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