A pinhole camera is placed 300m in front of a b... - JAMB Physics 2012 Question
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
correct option: d
==> \(\frac{v}{u}\) = \(\frac{hi}{ho}\)
==> \(\frac{5}{300}\) = \(\frac{2.5}{ho}\)
= 150m
==> \(\frac{5}{300}\) = \(\frac{2.5}{ho}\)
= 150m
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