Which of the following lenses would you prefe | vedclass

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Question

(D) convex lens produces a magnified,virtual,and erect image when an object is placed within its focal length.Magnification $(m)$ for a lens is given

Vedclass · Accepted Answer

$A$ convex lens of focal length $5 \, cm$

Vedclass · Answer

(D) convex lens produces a magnified,virtual,and erect image when an object is placed within its focal length.Magnification $(m)$ for a lens is given by the formula $m = f / (f + u)$,where $f$ is the focal length and $u$ is the object distance.For a given object distance,a lens with a shorter focal length provides higher magnification.Therefore,to read small letters,a convex lens with a shorter focal length $(5 \, cm)$ is preferred over one with a longer focal length $(50 \, cm)$ to obtain a larger image.

Which of the following lenses would you prefer to use while reading small letters found in a dictionary?

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