The scale of a vertical photograph of focal length ‘f’ taken from height of ‘H’ metres above M.S.L., at a point of reduced level ‘h’, is
A. $$\frac{{\text{f}}}{{\text{H}}}$$
B. $$\frac{{\text{f}}}{{{\text{H}} + {\text{h}}}}$$
C. $$\frac{{\text{f}}}{{{\text{H}} - {\text{h}}}}$$
D. $$\frac{{{\text{H}} - {\text{h}}}}{{\text{f}}}$$
Answer: Option C
This Question Belongs to Civil Engineering >> Surveying
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