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Question

We want a mirror that will make an object look larger. What combination of image and object distances (from the mirror) will accomplish this?

A
Image Distance 3.0cm, Object Distance 3.0cm
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B
Image Distance 2.0cm, Object Distance 3.0cm
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C
Image Distance 3.0cm, Object Distance 5.0cm
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D
Image Distance 3.0cm, Object Distance 2.0cm
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E
Image Distance 3.0cm, Object Distance 10.0cm
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Solution

The correct option is D Image Distance 3.0cm, Object Distance 2.0cm
Magnification by a mirror m=vu
The image distance |u| should be less than object distance |v| so that m>1 i.e. magnified image. Here we don't have to consider the sign of u and v as we are not concerned about the nature of the imgae. We are interested only in the size of image.

For option D : m=3.02.0=1.5 m>1
Thus the data given in option D will make a larger image.

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