A pinhole camera is placed 300m in front of a building so...
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
Correct answer is D
==> vu = hiho
==> 5300 = 2.5ho
= 150m