At the mouth of the tap, the area of cross-section is 2.0 cm2 and the speed of water is 3m/s. The area of cross-section of the water column 80cm below the tap is (use g = 10 m/s2)

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0.6 cm2

1.2 cm2

1.5 cm2

2.0 cm2

answer is B.

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Detailed Solution

v22=v12+2gh; A1v1=A2v2

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