To obtain photographs of an area of 1000 m average elevation, on scale – McqOptions

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1.	To obtain photographs of an area of 1000 m average elevation, on scale 1 : 30, 000, with a camera of 30 cm focal length, the flying height is
A.	4000 m
B.	5000 m
C.	6000 m
D.	7000 m.
Answer» D. 7000 m.

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