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Civil Engineering - Surveying

Exercise : Surveying - Section 2
41.
Pick up the correct statement from the following :
the power of a lens is the reciprocal of its focal length
the unit of power of the lens is diopter
the power of two or more thin lenses in contact is the power of the combination of the lenses
all the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
42.
The area of a plane triangle ABC, having its base AC and perpendicular height h, is
bh
ba sin C
bc sin A
S(S - a)(S - b)(S - c)
where S is
all the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
43.
The vertical angle between longitudinal axis of a freely suspended magnetic needle and a horizontal line at its pivot, is known
declination
azimuth
dip
bearing.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
44.
A relatively fixed point of known elevation above datum, is called
bench mark
datum point
reduced level
reference point.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
45.
Cross hairs in surveying telescopes, are fitted
in the objective glass
at the centre of the telescope
at the optical centre of the eye piece
in front of the eye piece.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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