The ratio of the focal length of the objective to that of an eye-piece of a telescope is called its
A) definition
B) brightness
C) sensitivity
D) magnification
Correct Answer:
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Q10: The projection of a traverse line on
Q11: When the cross-hairs are not clearly visible,
A)the
Q12: The angle between the back tangent and
Q13: The lines passing through points at which
Q14: A plumb bob is required
A)when measuring distances
Q16: The levelling should always commence from a
Q17: The obstacle, which obstructs vision but not
Q18: In plane surveying,
A)The curvature of the earth
Q19: Chain surveying is most suitable when
A)area to
Q20: The lines of earth's magnetic field run
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