Surveying
Homologous points are

Nodal points of the camera lens
Opposite corners of a photograph
Plumb points of stereo pair of photographs
Corresponding points on the ground and photograph

ANSWER DOWNLOAD EXAMIANS APP

Surveying
A ’level line’ is a

line parallel to the mean spheriodal surface of earth
line passing through the center of cross hairs and the center of eye piece
line passing through the objective lens and the eye-piece of a dumpy or tilting level
horizontal line

ANSWER DOWNLOAD EXAMIANS APP