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In a optics experiment, with the positiv...

In a optics experiment, with the positive of the object fixed, a student varies the positive of a convex lens and for each positive, the screen is adjusted to get a clear image of the object. A graph between the object distance u and the image distance v, from the lens, is plotted using the same scale for the two axes. A straight line passing through the origin and making an angle of `45^(@)` with the x-axis meets the experimental curve at P. The coordinates of P will be

A

`(2f,2f)`

B

`((f)/(2),(f)/(2))`

C

`(f,f)`

D

`(4f,4f)`

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The correct Answer is:
a.
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