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A horizontally placed hollow tube has a cross-sectional Area A at the beginning of the tube that gradually tapers off to A/2 at the end. An incompressible, ideal fluid of density p enters the tube with a velocity V at the beginning of the tube. What is the difference in pressure at the two ends of the tube?
  • a)
  • b)
  • c)
    pV2
  • d)
    2p V2
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
A horizontally placed hollow tube has a cross-sectional Area A at the ...
Let velocity at the other end A/2 is V
By equation of continuity AV = A'V
V' = 2V
Using Bernoulli equation 
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A horizontally placed hollow tube has a cross-sectional Area A at the beginningof the tube that gradually tapers off to A/2at the end. An incompressible, ideal fluid of density p enters the tube with a velocity V at the beginning of the tube. What is the difference in pressure at the two ends of the tube?a)b)c)pV2d)2p V2Correct answer is option 'B'. Can you explain this answer?
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