state formula for magnifying power?
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M=1+Df when the image forms at infinity. Where D is the least distance of distinct vision and is equal to v. D being constant and the magnifying power depends upon the focal length of the lens. Smaller the focal length is going greater will be the magnifying power of the lens.
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the magnification formula (M= v/u) for lenses and see how to find the image height and its nature (whether it's real or virtual).
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