Civil Engineering - UPSC Civil Service Exam Questions - Discussion

Discussion Forum : UPSC Civil Service Exam Questions - Section 14 (Q.No. 45)
45.
Which one of the following statements about photogrammetric surveying is correct ? The relief displacement
decreases with increase in flying height
in negative for a point above datum
decreases as the distance of the object from the principal point increases
of the point is not affected by the tilt of the photograph.
Answer: Option
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