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Q.

If liquid enters a section of tube of radius 2 cm  with a velocity 20 m/s , with what velocity does the liquid leave another section of the tube of radius 1 cm ? The tube is horizontal

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a

0.625 m/s

b

5.625 m/s

c

80 m/s

d

24 m/s

answer is C.

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Detailed Solution

r12V1=r22V2 2220=12V2 ⇒V2=80ms−1
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