Home/
Competitive Exams/
JEE Main & Advanced/
Physics/
Fluid Mechanics/
Question 30956
JEE Physics · Hard

Fluid Mechanics: Surface Tension MCQ

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

Timer-based practiceDetailed answer reviewMobile-friendly flow
Surface TensionHardQuestion 30956

Question

Two soap bubbles of radii r₁ and r₂ (r₁ > r₂) are connected. Gas flows from:
  1. A
    Larger to smaller
  2. B
    Smaller to larger
    Correct
  3. C
    No flow occurs
  4. D
    Depends on temperature

Correct answer

Smaller to larger

Explanation

Excess pressure = 4T/r. Smaller bubble has higher pressure → gas flows into larger bubble. Larger bubble grows, smaller shrinks.

Review Fluid Mechanics notesStart timed chapter practice