A) \[50\,m{{s}^{-1}}\]
B) \[5\,m{{s}^{-1}}\]
C) \[0.05\,m{{s}^{-1}}\]
D) \[0.5\,m{{s}^{-1}}\]
Correct Answer: B
Solution :
According to equation of continuity, \[Area\text{ (}a)\,\times Velocity\,\text{(}v)=Constant.\] For tube, \[8\times {{10}^{-4}}\times \left( \frac{0.15}{60} \right)={{a}_{1}}{{v}_{1}}\] For holes, \[(40\times {{10}^{-8}})\times v={{a}_{2}}{{v}_{2}}\] \[\therefore \] \[{{a}_{2}}{{v}_{2}}={{a}_{1}}{{v}_{1}}\] \[40\times {{10}^{-8}}\times v=\frac{8\times {{10}^{-4}}\times 0.15}{60}\] \[v=\frac{8\times 15}{4\times 6}=5\,m{{s}^{-1}}\]You need to login to perform this action.
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