Magnifying power of a simple microscope is inversely proportional to the focal length of the lens. What then stops us from using a convexlens of smaller and smaller focal length and achieving greater and greater magnifying power ?

Magnifying power of a simple microscope is inversely proportional to t

1.	Magnifying power of a simple microscope is inversely proportional to the focal length of the lens. What then stops us from using a convexlens of smaller and smaller focal length and achieving greater and greater magnifying power ?
Answer» Solution :First, grinding lens of very SMALL focal length is not easy. More imprortant, if you decrease focal length, aberrations (both SPHERICAL and chormatic ) become more PRONOUNCED. So, in practice, you cannot get a magnifyng power of more than 3 or so with a simple convex lens. However, using an ABERRATION corrected lens system, ONE can increase this limit by a factor of 10 or so.

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Magnifying power of a simple microscope is inversely proportional to the focal length of the lens. What then stops us from using a convexlens of smaller and smaller focal length and achieving greater and greater magnifying power ?

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