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Question

A convex mirror has a focal length f. A real object placed at a distance f in front of it from the pole, produces an image at

A
2f
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B
f2
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C
f
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D
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Solution

The correct option is B f2

Using mirror formula,
1v+1u=1f
Here, u=f,f=+f
put these values in mirror formula,
1v+1(f)=1fv=f2

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