Question

A vertical photograph was taken at an altitude of 1800 m above MSL. If the focal length of the camera is 30 cm, then the scale of the photograph for a terrain lying at an elevation of 800 m is 1:________

• A. 3333.33

Answer 1

The correct option is A 3333.33
$Scale,S=\frac{f}{H-h}=\frac{30\times {10}^{-2}}{1800-800}$
$=\frac{1}{3333.33}$

Therefore, scale of photograph is 1: 3333.33.