Surveying
The point where a vertical line through the optical centre of the camera lens intersects the ground, is known as

Ground plumb point
Iso-centre
Ground principal point
Perspective centre

ANSWER DOWNLOAD EXAMIANS APP

Surveying
Accidental errors

Are generally small
Do not follow any definite mathematical law
Cannot be removed by applying corrections to the observed values
All of these

ANSWER DOWNLOAD EXAMIANS APP

Surveying
The cross hairs in the surveying telescope are placed

midway between eye piece and objec-tive lens
much closer to the objective lens than to the eye piece
much closer to the eye-piece than to the objective lens
anywhere between eye-piece and objective lens

ANSWER DOWNLOAD EXAMIANS APP