8. In order that the water shall never rise more than 100 cm above the crest for a discharge of 5 cube metres per second, the length of weir will be
A. 2.5 metres
B. 2.49 metres
C. 2.51 metres
D. 1 metre
8. In order that the water shall never rise more than 100 cm above the crest for a discharge of 5 cube metres per second, the length of weir will be
A. 2.5 metres
B. 2.49 metres
C. 2.51 metres
D. 1 metre