A rectangular opening on the side of a tank has a width \( l \). The top of the opening is at a ....

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A rectangular opening on the side of a tank has a width \( l \). The top of the opening is at a depth \( h_{1} \) below the surface of the water and the bottom is at a depth \( h_{2} \) (Figure). The volume of water that emerges from
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the opening in a unit time is given by \( \alpha \sqrt{2 \mathrm{~g}} \mathrm{~m}^{3} / \mathrm{s} \).
Fill the value of \( \alpha \) in OMR sheet. (Given \( h_{1}=1 \mathrm{~m}, h_{2} \) \( =4 \mathrm{~m} \) and \( l=1.5 \mathrm{~m} \) )


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