Surveying - Section 1 (3)

Pick up the correct  statement from the following :

True meridians are generally preferred to magnetic meridians because

A bearing of a line is also known as

Accuracy of 'fix' by two point problem, is

While viewing through a level telescope and moving the eye slightly, a relative movement occurs between the image of the levelling staff and the cross hairs. The instrument is

Pick up the method of surveying in which field observations and plotting proceed simultaneously from the following

Pick up the correct statement from the following:

If L is the perimeter of a closed traverse, ΔD is the closing error in departure, the correction for the departure of a traverse side of length l, according to Bowditch rule, is