In photographic surveying, the bisectors of an angle between the lines joining the plumb points and principal points intersect the ground and picture planes at ‘I’ and ‘i’ respectively called

In photographic surveying, the bisectors of an angle between the lines

1.	In photographic surveying, the bisectors of an angle between the lines joining the plumb points and principal points intersect the ground and picture planes at ‘I’ and ‘i’ respectively called
A.	Angle of tilts
B.	Principal points
C.	Isocentres
D.	Plumb points
Answer» D. Plumb points

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In photographic surveying, the bisectors of an angle between the lines joining the plumb points and principal points intersect the ground and picture planes at ‘I’ and ‘i’ respectively called

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