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

concave

convex

plano-convex

plano-concave

Answer is:

concave

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51) Which of the following errors can be neutralised by setting the level midway between the two stations

error due to curvature only

error due to refraction only

error due to both curvature and re-fraction

none of the above

Answer is:

error due to both curvature and re-fraction

52) Height of instrument method of levelling is

more accurate than rise and fall method

less accurate than rise and fall method

quicker and less tedious for large number of intermediate sights

none of the above

Answer is:

quicker and less tedious for large number of intermediate sights

53) The rise and fall method

is less.accurate than height of instrument method

is not suitable for levelling with tilting levels

provides a check on the reduction of intermediate point levels

quicker and less tedious for large number of intermediate sights

Answer is:

provides a check on the reduction of intermediate point levels

54) If the staff is not held vertical at a level?ling station, the reduced level calculated from the observation would be

true R.L.

more than true R.L.

less than true R.L.

none of the above

Answer is:

less than true R.L.

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

concave

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Related Surveying MCQ with Answers

51) Which of the following errors can be neutralised by setting the level midway between the two stations

error due to both curvature and re-fraction

52) Height of instrument method of levelling is

quicker and less tedious for large number of intermediate sights

53) The rise and fall method

provides a check on the reduction of intermediate point levels

54) If the staff is not held vertical at a level?ling station, the reduced level calculated from the observation would be

less than true R.L.

Surveying MCQ with Answers