Question

For two ground points \(A\) and \(B\) at the same elevation on a vertical photograph, the photo scale is determined by the:

• A. Ratio of focal length to flying height only
• B. Ratio of ground distance to flying height
• C. Ratio of elevation to focal length
• D. Ratio of photo distance to ground distance between \(A\) and \(B\)

Hint:

For a vertical aerial photograph, \[ \boxed{ \text{Scale} = \frac{\text{Photo Distance}}{\text{Ground Distance}} } \] or approximately, \[ \boxed{ \text{Scale} = \frac{f}{H} } \] when terrain is level.

Answer 1

The Correct Option is D