Light Questions
1. The length of a pinhole camera is 20cm. Determine the height of a storey building 300m away
from the pin hole if the image formed on the screen of the pin hole camera is 2.5cm high
Light Answers
1. 20 = 2.5
30000 hO
h0 = 30000 x 2.5
20
= 3750cm
= 3.75m
