Magnification produced by a concave lens is always:(a) more than 1 (b) equal to 1 (c) less than 1 (d) more than 1 or less than 1

(c) less than 1

Explanation

Magnification formula:

$m=\frac {v}{u}=\frac {h_2}{h_1}$

where,  $m$ = magnification, $v$ = image distance, $u$ = object distance, ${h_2}$ = height of image, ${h_1}$ = height of object.

 From the magnification formula, it is clear that the magnification varies directly with the size of the image. The image formed by a concave lens is always smaller than the object, therefore, the magnification $(m)$ produced by a concave lens is always less than 1.

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Updated on: 10-Oct-2022

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