What do you understand by linear magnification and angular magnification? Explain how a convex lens is used as a magnifier?

What do you understand by linear magnification and angular magnification? Explain how a convex lens is used as a magnifier?
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Answer :

Linear Magnification: The ratio of the size of image to the size of object is called linear magnification.
Angular magnification: The ratio of the angle subtended by the image as seen through the optical device to that subtended by the object at the un-aided eye Convex lens used as a magnifier when an object is brought within the focal length of convex lens.
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