Question
Define magnification produced by a lens. State its unit.
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Answer
The magnification produced by a lens is defined as the ratio of the size of the image to the size of the object, i.e.,
Magnification $(m)=\frac{\text { Size of the image }}{\text { Size of the object }}$
It has no unit.
Magnification $(m)=\frac{\text { Size of the image }}{\text { Size of the object }}$
It has no unit.
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