Civil Engineering - UPSC Civil Service Exam Questions - Discussion

Discussion Forum : UPSC Civil Service Exam Questions - Section 17 (Q.No. 20)
20.
If two triangulation signals of 6.75 m height each, are to be just visible over ground mutually, what is the maximum distance between their locations on the ground surface ?
10 km
20 km
30 km
40 km
Answer: Option
Explanation:
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