Q.

An open tank filled with water has a hole at its bottom. If the total pressure at the bottom of the tank is 8 atmospheres the velocity efflux is nearly (1 atmosphere =105N/m2 )

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a

9.8 m/s

b

12 m/s

c

24 m/s

d

40 m/s

answer is D.

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Detailed Solution

8×105=103×v22p=hdg⇒8×105=h×103×9.8⇒h=8×105103×9.8=8009.8  Velocity efflux v=2×9.8×8009.8=40m/sec
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An open tank filled with water has a hole at its bottom. If the total pressure at the bottom of the tank is 8 atmospheres the velocity efflux is nearly (1 atmosphere =105N/m2 )