Surveying
The correction applied to the measured base of length ‘L’ is

Tension = (P - Ps)L/AE
Sag = L³w²/24P² where w is the weight of tape/m
Slope = (h²/2L) + (h⁴/8L³) where h is height difference of end supports
All of these

ANSWER DOWNLOAD EXAMIANS APP

Surveying
Contour interval is

Larger if the time available is more
Inversely proportional to the scale of the map
Directly proportional to the flatness of ground
Larger for accurate works

ANSWER DOWNLOAD EXAMIANS APP