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Questions  

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

a
0.625 m/s
b
5.625 m/s
c
80 m/s
d
24 m/s

detailed solution

Correct option is C

r12V1=r22V2 2220=12V2 ⇒V2=80ms−1

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