Surveying
A star is said to elongate

When the star
When the star momentarily moves vertically
All of these
When the angle at the star of the spherical triangle is 90°

ANSWER DOWNLOAD EXAMIANS APP

Surveying
Systematic errors

All listed here
Are also known as cumulative errors
Always follow some definite mathematical law
Can be removed by applying corrections to the observed values

ANSWER DOWNLOAD EXAMIANS APP

Surveying
Homologous points are

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

ANSWER DOWNLOAD EXAMIANS APP