Statement I): Reciprocal levelling is adopted to decide the difference of level between two points, a considerable distance apart, with great precision.
Statement II): Reciprocal levelling eliminates errors due to curvature, refraction and collimation.
1
Both Statement (I) and Statement (II) are individually true and Statement (II) is the correct explanation of Statement (I)
2
Both Statement (I) and Statement (II) are individually true but Statement (II) is not the correct explanation of Statement (I)
3
Statement (I) is true but Statement (II) is false
4
Statement (I) is false but Statement (II) is true