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Surveying

Surveying
In an internal focussing type of telescope, the lens provided is

concave
convex
plano-convex
plano-concave

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Surveying
The correction for parallax, is

- 8".8 cos α
+ 8".8 cos α
- 8".8 cos α
+ .8" sin α

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Surveying
For accurate work, the steel band should always be used in preference to chain because the steel band

can be easily repaired in the field
is lighter than chain
is easier to handle
is practically inextensible and is not liable to kinks when in use

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Surveying
Right ascension of a heavenly body is its equatorial angular distance measured

Westward from the first point of Aeries
Eastward from the first point of Aeries
Eastward from the first point of Libra
Westward from the first point of Libra

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Surveying
Which of the following methods of offsets involves less measurement on the ground?

method of perpendicular offsets
method of oblique offsets
all involve equal measurement on the ground
method of ties

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Surveying
The scale of the photography taken from a height of 300 m, with a camera of focal length 15 cm, is

1 : 20,000
1 : 15,000
1 : 30,000
1 : 10,000

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