alexysanselmo8530 alexysanselmo8530

25-01-2024
Physics

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Keeping the instrument height as 1½ m, length of staff 4 m, the up gradient of the ground 1 in 10,
the sight on the up slope must be less than
(A) 25 cm
(B) 20 m
(C) 45 m
(D) 10 m

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