AP EAMCET · PHYSICS · Mechanical Properties of Fluids
Two capillary tubes of same length each of but of different radii and are connected in series. When water flows, the pressure difference between the ends of the arrangement is . Then the pressure difference between the ends of the first tube is
- A
- B
- C
- D
Answer & Solution
Correct Answer
(B)
Step-by-step Solution
Detailed explanation
The figure below represents the capillary tubes of same lengths but different radii.From the Poiseuille's equation, the expression for the water resistance,R=8ηlπr4R∝1r4The ratio of water resistance in tube I and II,RlRII=rII4rl4=16×10-1216×16×10-1216RI=RIILet RI=R,RII=16RThus,…
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