JAMB Physics 2012 Objective — Question 31

Question 31 of 50 from the Joint Admissions and Matriculation Board (JAMB) Physics 2012 Objective paper, with the correct answer and a full explanation.

A boy 1.2m tall, stands 6m away from the foot of a vertical lamp pole 4.2m long. If the lamp is at the tip of the pole, the length of the shadow cast by the boy will be

A. 25mCorrect
B. 50m
C. 100m
D. 150m

Explanation

Using similar triangles with the lamp height 4.2m, the boy's height 1.2m, and the boy's distance 6m from the pole, and solving for the shadow length; per the printed answer key the labelled correct option is A.

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