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If the image of a triangulation station of R.L. 500 m is 4 cm from the principal point of a vertical photo taken from an altitude of 2000 m, above datum, the height displacement will be

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Correct Answer: Option D
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Riju Chakraborty
Riju Chakraborty 3 months ago
For a vertical aerial photograph, the height displacement is:
d=rh/(H-h)
Where:
r=4cm= distance from principal point
h=500m= elevation of station
H=2000m= flying altitude above datum
d=4*500/(2000-500)
=2000/1500
=1.333cm
=13.33mm