Five converging lenses are used as simple magnifiers. In each case, the focal length f and the distance between the lens and the object p are given. Rank them in order of the angular magnification, greatest to least.

Assume that the magnifier is held close to the eye. Use the standard near point of 25 cm to find the angular magnification.

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(a) f= 15 cm, p = 15 cm; (b) f = 15 cm, p = 10 cm; (c) f= 10 cm, p = 10 cm; (d) f = 20 cm, p = 20 cm; (e) f = 20 cm, p = 15 cm.