Capillarity with a too-short tube: What happens to the water rise? If a thin capillary tube is replaced by another tube of insufficient length compared with the predicted capillary rise, predict the observed behavior. Choose the correct option.
IIT JEE
Physics
Difficulty: Easy
Choose an option
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AWater rises to the top and overflows (spills)
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BWater does not rise at all
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CAngle of contact becomes zero so rise is infinite
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DMeniscus inverts to convex
Answer
Correct Answer: Water rises to the top and overflows (spills)
Explanation
Concept
- Capillary rise height h is set by surface tension, density, gravity, and radius.
- If tube length < theoretical rise, the liquid simply reaches the open end and overflows.
Final AnswerWater rises to the top and overflows (spills)