Mathematics · Surveying
A camera equipped with a 152 mm focal length lens is used to take a vertical photograph from a flying height of 2780 m above mean sea level. If the terrain is flat with an elevation of 500 m, the scale of the photograph will be:
- 11 : 20,000
- 21 : 22,000
- 31 : 24,500
- 41 : 15,000✓
Correct answer
1 : 15,000
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