PhysicsLight: reflectionJAMB
An object stands 20 cm in front of a plane mirror. How far is the image from the object?
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Answer: B. 40 cm
The image is 20 cm behind the mirror, so it is 20 + 20 = 40 cm from the object.
An AdmitMe practice question, written for the JAMB syllabus. Not an official past question.