A pinhole camera is placed 300m in front of a building so that the image...

JAMB 2012

A pinhole camera is placed 300m in front of a building so that the image is formed on a screen 5cm from the the pinhole. If the image is 2.5cm high, the height of the building will be

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

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Correct Answer: Option D

Explanation

==> \(\frac{v}{u}\) = \(\frac{hi}{ho}\)

==> \(\frac{5}{300}\) = \(\frac{2.5}{ho}\)

= 150m

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A pinhole camera is placed 300m in front of a building so that the image...

Correct Answer: Option D

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