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Q. |
Which of the following errors can be eliminated by taking mean of bot face observations ? |
A. | error due to imperfect graduations |
B. | error due to eccentricity of verniers |
C. | error due to imperfect adjustment of plate levels |
D. | error due to line of collimation not being perpendicular to horizontal axis |
Answer» D. error due to line of collimation not being perpendicular to horizontal axis |
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