Civil Engineering - UPSC Civil Service Exam Questions - Discussion
Discussion Forum : UPSC Civil Service Exam Questions - Section 27 (Q.No. 16)
16.
If the line of sight between two stations A and B, on sea, and 80 km apart, makes tangent at point A, then the minimum elevation of the signal required at B (considering the coefficient of refraction "m" = 0.08 and the mean radius of earth as 6400 km) will be
Discussion:
3 comments Page 1 of 1.
Daud Unnadpotra said:
7 years ago
h = D2 x (1-2m)/2R.
= 80*80*(1-2 * 0.08)/2 * 6400.
= 0.42 km.
= 420mtr.
= 80*80*(1-2 * 0.08)/2 * 6400.
= 0.42 km.
= 420mtr.
(3)
Ramya said:
7 years ago
Can anyone explain, please?
(5)
Lokesh said:
7 years ago
Please explain it.
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