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Question 6490
NEET Physics · Hard

Mechanical Properties of Fluids: Capillarity MCQ

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CapillarityHardQuestion 6490

Question

Mercury in a glass capillary tube:
  1. A
    Rises above main level
  2. B
    Falls below main level
    Correct
  3. C
    Stays at same level
  4. D
    Rises and then falls

Correct answer

Falls below main level

Explanation

Mercury is non-wetting (contact angle > 90°): cosθ < 0 → capillary depression (falls).

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