Surveying
The height displacement on a vertical photograph

Decreases as the flying height increases
Increases as the ground elevation increases
All listed here
Increases as the horizontal distance increases from the principal point

ANSWER DOWNLOAD EXAMIANS APP

Surveying
The difference between a level line and a horizontal line is that

horizontal line is normal to plumb line while level line may not be normal to the plumb line
both are same
level line is normal to plumb line while horizontal line may not be normal to plumb line at the tangent point to level line
level line is a curved line while hori-zontal line is a straight line

ANSWER DOWNLOAD EXAMIANS APP