An object is placed 15 cm in front of a concave mirror with a focal length of 30 cm.What is the magnification?
A)1
B)2
C)1/2
D)1/4
E)-2

Name: An object is placed 15 cm in front of a concave mirror with a focal length of 30 cm.What is the magnification? A)1 B)2 C)1/2 D)1/4 E)-2
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Question

Quizplus · Accepted Answer

The magnification (m) is given by the formula m = - (image distance/object distance). Using the mirror formula (1/f = 1/v + 1/u), where f = -30 cm and u = -15 cm, we find v = -30 cm. Thus, m = -(-30/-15) = 2.

An Object Is Placed 15 Cm in Front of a Concave