In an experimental setup, the discharge through a triangular notch is $0.0074 \mathrm{~m}^{3} \mathrm{~s}^{-1}$ at an operating head of $0.1 \mathrm{~m}$. The coefficient of discharge for the notch is 0.7 . If the required discharge is $0.1 \mathrm{~m}^{3} \mathrm{~s}^{-1}$,the corresponding width of water surface in $\mathrm{m}$ is
(A) 0.80
(B) 0.099
(C) 0.00043
(D) 0.00086
In an experimental setup, the discharge through a triangular notch is $0.0074 \mathrm{~m}^{3} \mathrm{~s}^{-1}$ at an operating head of $0.1 \mathrm{~m}$. The coefficient of discharge for the notch is 0.7 . If the required discharge is $0.1 \mathrm{~m}^{3} \mathrm{~s}^{-1}$,the corresponding width of water surface in $\mathrm{m}$ is
(A) 0.80
(B) 0.099
(C) 0.00043
(D) 0.00086