- (A) eastern side of the true meridian
- (B) western side of the true meridian
- (C) southern side of the true meridian
- (D) none of the above
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- (A) error due to horizontal axis not being perpendicular to the vertical axis
- (B) index error i.e. error due to imperfect adjustment of the vertical circle vernier
- (C) error due to non-parallelism of the axis of telescope level and line of collimation
- (D) none of the above
- (A) equal to true error
- (B) half the true error
- (C) two times the true error
- (D) four times the true error
- (A) increase
- (B) decrease
- (C) not change
- (D) either ‘a’ or ‘b’
- (A) horizontal line
- (B) line parallel to the mean spheriodal surface of earth
- (C) line passing through the center of cross hairs and the center of eye piece
- (D) line passing through the objective lens and the eye-piece of a dumpy or tilting level
- (A) backsight
- (B) intermediate sight
- (C) foresight
- (D) all of the above
- (A) concave
- (B) convex
- (C) plano-convex
- (D) plano-concave
- (A) reading both verniers and taking the mean of the two
- (B) taking both face observations and taking the mean of the two
- (C) double sighting
- (D) taking mean of several readings distributed over different portions of the graduated circle
- (A) leveling
- (B) prolonging a straight line
- (C) measurement of horizontal angles
- (D) all of the above
- (A) midway between eye piece and objec¬tive lens
- (B) much closer to the eye-piece than to the objective lens
- (C) much closer to the objective lens than to the eye piece
- (D) anywhere between eye-piece and objective lens
