A) 10 m/s
B) 20 m/s
C) 15 m/s
D) 25 m/s
Correct Answer: B
Solution :
At bottom of tank \[p=h\rho g=3\times {{10}^{5}}N/{{m}^{2}}\] Pressure due to liquid column \[{{p}_{1}}=3\times {{10}^{5}}-1\times {{10}^{5}}=2\times {{10}^{5}}\] Velocity of water \[v=\sqrt{2gh}\] \[v=\sqrt{\frac{2{{p}_{1}}}{\rho }}=\sqrt{\frac{2\times 2\times {{10}^{5}}}{{{10}^{3}}}}\] = 20 m/s
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