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Question: Answered & Verified by Expert
A liquid is coming out from a vertical tube. The relation between the weight of the drop $W$, surface tension of the liquid $T$ and radius of the tube $r$ is given by, if the angle of contact is zero
PhysicsMechanical Properties of FluidsJEE Main
Options:
  • A $W=\pi r^2 T$
  • B $W=2 \pi r T$
  • C $W=2 r^2 \pi T$
  • D $W=\frac{3}{4} \pi r^3 T$
Solution:
2269 Upvotes Verified Answer
The correct answer is: $W=2 \pi r T$
Correct option is 2. $W=2 \pi r T$
If the angle of contact is zero
The relation between the weight of the drop $W$, surface tension of the liquid $T$ and radius of the tube $r$ is given by,
$W=2 \pi r T$

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