A student measures the focal length of a convex lens by putting an object pin at a distance $u$from the lens and measuring the distance $v$ of the image pin. The graph between $u$and $v$ plotted by the student should look like

Question

Dr. Abubacker · Accepted Answer

(c) $\frac{1}{v} - \frac{1}{u} = \frac{1}{f} =$ constant, so (c) is correct graph.

Q. A student measures the focal length of a convex lens by putting an object pin at a distance $u$from the lens and measuring the distance $v$ of the image pin. The graph between $u$and $v$ plotted by the student should look like

Explanation

Reviewed by Dr. Abubacker

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