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Question 30971
JEE Physics · Hard

Fluid Mechanics: Capillarity MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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CapillarityHardQuestion 30971

Question

In zero gravity, capillary rise would be:
  1. A
    Zero
  2. B
    Same as on Earth
  3. C
    Infinite (liquid fills tube completely)
    Correct
  4. D
    Double

Correct answer

Infinite (liquid fills tube completely)

Explanation

Capillary rise h = 2Tcosθ/(ρgr). If g → 0, h → ∞ — liquid rises to fill the entire tube regardless of length.

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