Contour lines cross ridge lines or valley lines are at:
A45 degree
B30 degree
C90 degree
DNone of these
No.1 PSC Learning App
★
★
★
★
★
Related Questions:
If the field temperature is lower than that which the tape was calibrated, it results in:
The carry over factor in a prismatic member whose far end is fixed is
An obstacle which obstructs chaining but not vision:
The value of deflection angle is:
(a)10
(c) 15
The circle in which a plane tangent to the earth surface at the point observation intersect the celestial sphere is called