Question
Geomatics Engineering Question on Principles of surveying
For a reconnaissance survey, it is necessary to obtain vertical aerial photographs of a terrain at an average scale of 1: 13000 using a camera. If the permissible flying height is assumed as 3000 m above a datum and the average terrain elevation is 1050 m above the datum, the required focal length (in mm) of the camera is
A
100
B
150
C
125
D
200
Answer
150
Explanation
Solution
The correct option is (B) : 150.