PhysicsLight: reflectionJAMB
An object is placed 30 cm from a concave mirror of focal length 10 cm. Find the magnification of the image.
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Answer: A. 0.5
1/v = 1/10 − 1/30 = 1/15, so v = 15 cm; m = v/u = 15/30 = 0.5.
An AdmitMe practice question, written for the JAMB syllabus. Not an official past question.