Keeping the instrument height as 1.5 m, length of staff 4 m, the slope – McqOptions

MCQOPTIONS

1.	Keeping the instrument height as 1.5 m, length of staff 4 m, the slope of the ground as 1 in 10, the sight on the down-slope, must be less than________m.
A.	15
B.	20
C.	25
D.	30
Answer» D. 30

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