Surveying - Section 1 (4)

In quadrantal bearing system, back bearing of a line may be obtained from its forward bearing, by

The limiting length of an offset does not depend upon

One of the tacheometric constants is additive, the other constant, is

If θ is the vertical angle of an inclined sight, δ is the angle of tilt of the staff, the error

Two concave lenses of 60 cm focal length are cemented on either side of a convex lens of 15 cm focal length. The focal length of the combination is

In chain surveying field work is limited to

If R is the radius of the main curve, θ the angle of deflection, S the shift and L the length of the transition curve, then, total tangent length of the curve, is

The 'fix' of a plane table station with three known points, is bad if the plane table station lies