If is the difference in level between end points separated by , then the slope correction
is [(h²/2l) + (h
4
/8l3
)]. The second term may be neglected if the value of in a 20 m distance is less
than
(A) ½ m
(B) 1 m
(C) 2 m
(D) 3 m
is [(h²/2l) + (h
4
/8l3
)]. The second term may be neglected if the value of in a 20 m distance is less
than
(A) ½ m
(B) 1 m
(C) 2 m
(D) 3 m