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Question

Water flows into a large tank with flat bottom at the rate of 10−4m3s−1. Water is also leaking out of a hole of area 1 cm2 at its bottom. If the height of the water in the tank remains steady, then this height is__?

A
4 cm
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B
2.9 cm
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C
1.7 cm
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D
5.1 cm
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Solution

The correct option is C 5.1 cm
Since height of water column is constant therefor, water inflow rate (Qin)
= water outflow rate
Qin=104m3s1
Qout=Au=104×2gh
104=104=20×h
h=120m
h=5 cm
correct answer is (4).
1141854_1330516_ans_7f01c4ffe78e4844a9852b0c9d9c757a.png

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