What is the formula for magnification obtained with the lens?

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Ratio of the height of the image to the height of an object.

Double the focal length.

Inverse of object distance.

Inverse of the radius of curvature.

answer is A.

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Detailed Solution

The formula for magnification obtained with the lens is the ratio of the height of the image to the height of an object.
Magnification is nothing but the ratio of the size of an image to the size of the object.

m = \frac{height of image (i)}{height of object (o)}

m = \frac{i}{o}

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