An object is placed 60 cm from a convex lens of focal length 10 cm. What is the magnification?
A) -0.10
B) 0.10
C) 0.15
D) 0.20
E) -0.20

Name: An object is placed 60 cm from a convex lens of focal length 10 cm. What is the magnification? A) -0.10 B) 0.10 C) 0.15 D) 0.20 E) -0.20
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Question

Quizplus · Accepted Answer

The lens formula is 1/f = 1/v - 1/u. Here, f = 10 cm and u = -60 cm (object distance is taken as negative). Solving for v gives v = 12 cm. Magnification (m) is given by m = v/u = 12/(-60) = -0.20.

An Object Is Placed 60 Cm from a Convex Lens