A Lens of Focal Length 40 Mm Is Used as a Magnifier.the

Question 63
Multiple Choice

A lens of focal length 40 mm is used as a magnifier.The object being viewed is 5.3 mm long,and is positioned at the focal point of the lens.The user of the magnifier has a near point at 25 cm.What is the angular magnification of the magnifier? A)6.3 B)5.6 C)6.9 D)7.5 E)8.1