UPSC Civil Service Exam Questions

Q1: Which one of the following statements best defines a 'level surface'?

A A horizontal surface every element of which is normal to plumb line

B A curved surface every element of which is perpendicular to the spheroidal shape of the earth

C A plane surface which is perpendicular at all points to the direction of gravity

D A curved surface which is perpendicular to the direction of gravity at every point

ANS:D - A curved surface which is perpendicular to the direction of gravity at every point

No answer description is available. 



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