Surveying
Pick up the incorrect statement from the following. The angular distance of heavenly bodies on observer's meridian measured from the pole, is

Co-declination
Polar distance
Co-latitude
Co-altitude

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Surveying
A ’level line’ is a

line passing through the objective lens and the eye-piece of a dumpy or tilting level
line parallel to the mean spheriodal surface of earth
line passing through the center of cross hairs and the center of eye piece
horizontal line

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Surveying
If altitude bubble is provided both on index frame as well as on telescope of a theodolite, then the instrument is levelled with reference toi) altitude bubble on index frameii) altitude bubble on index frame if it is to be used as a leveliii) altitude bubble on telescopeiv) altitude bubble on telescope if it is to be used as a levelThe correct answer is

only (iii)
only (i)
both (ii) and (iii)
both (i) and (iv)

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Surveying
Contour interval is

Larger if the time available is more
Larger for accurate works
Inversely proportional to the scale of the map
Directly proportional to the flatness of ground

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