The levelling staff held at a distance of 200 m is read at 4.54 m with – McqOptions

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1.	The levelling staff held at a distance of 200 m is read at 4.54 m with the bubble out of centre by 2 divisions towards the observer. If the sensitiveness of the bubble is 25 secs/division, and 1 division = 2 mm, then actual staff reading must have been
A.	4.5 m
B.	4.492 m
C.	4.54 m
D.	4.62 m
Answer» C. 4.54 m

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