arrow
arrow
arrow
Calculate the combined correction, due to refraction and Earth's curvature, in levelling (surveying) for a distance of 2500 m.
Question

Calculate the combined correction, due to refraction and Earth's curvature, in levelling (surveying) for a distance of 2500 m.

A.

0.070 m

B.

0.420 m

C.

0.490 m

D.

0.168 m

Correct option is B


Combined correction = 0.0673 (d)²
d = 2.5 km
Combined correction = 0.0673 × (2.5)²
= 0.420 m

test-prime-package

Access ‘SSC JE Civil’ Mock Tests with

  • 60000+ Mocks and Previous Year Papers
  • Unlimited Re-Attempts
  • Personalised Report Card
  • 500% Refund on Final Selection
  • Largest Community
students-icon
354k+ students have already unlocked exclusive benefits with Test Prime!
test-prime-package

Access ‘SSC JE Civil’ Mock Tests with

  • 60000+ Mocks and Previous Year Papers
  • Unlimited Re-Attempts
  • Personalised Report Card
  • 500% Refund on Final Selection
  • Largest Community
students-icon
354k+ students have already unlocked exclusive benefits with Test Prime!
Our Plans
Monthsup-arrow