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JAMB Physics 2012 Paper
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© africaexams.com
Question : 25
Total: 42
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
25m
50m
100m
150m
Validate
Solution:
==>
v
u
=
h
i
h
o
==>
5
300
=
2.5
h
o
= 150m
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