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Water is flowing through a pipe under constant pressure. At some place the pipe becomes narrow. The pressure of water at this place:
  • a)
    remains the same
  • b)
    depends on several factors
  • c)
    decreases
  • d)
    increases
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Water is flowing through a pipe under constant pressure. At some place...
We know that the continuity theorem says that if the cross sectional area of the water flow decreases, the speed must increase to maintain the volume of water flown. And according to Bernoulli's principle if the speed of water flow increases , then the pressure must decrease.
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Most Upvoted Answer
Water is flowing through a pipe under constant pressure. At some place...
Equation of continuity says a1v1. =a2v2
area less(narrow) velocity is more
p1+1/2 roh v1^2=p2+1/2 ro v2^2
suppose v2>v1 due to A1>A2
if v2>v1 so 1/2ro v2^2 also > 1/2rov1^2
so p2 should be less for balance in Bernoulli equi
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Community Answer
Water is flowing through a pipe under constant pressure. At some place...
I think so and.is d
bcz on area decrease velo.increase & pressure is dv^2
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