Assertion (A): Reciprocal levelling is adopted to decide the precise difference of levels between two points at a considerable distance apart.
Reason (R): Reciprocal levelling eliminates error due to curvature, refraction and line of collimation.1
Both assertion (A) and Reason (R) are individually true and Reason (R) is the correct explanation of Assertion (A).
2
Both Assertion (A) and Reason (R) are individually true but Reason (R) is NOT the correct explanation of Assertion (A).
3
Assertion (A) is true but Reason (R) is false.
4
Assertion (A) is the false but Reason (R) is true.
5
Question Not Attempted