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4, What is meant by magnification?Write its expression. What is its signfor thea) real imageb) virtual image |
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Answer» Magnification:-~~~~~~~~~~~~~~☆Magnification produced by a spherical mirror or lens can be defined as the ratio of the height of the image to that of the object. ☆If we take h as the height of the object and h' as the height of the image, then the Magnification produced by the mirror or lens will be:- Magnification, m = h'/h ☆The sign of the Magnification for real image is taken to be as (-)ve and it is taken as (+)ve for virtual images. |
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