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The adjoining diagram shows three soap bubbles A , B and C prepared by blowing the capillary tube fitted with stop cocks, S 1 , S 2 and S 3 . The bubble B is the largest and the bubble C is the smallest. With stop cock S closed, what will happen when we open the stop cocks S 1 , S 2 and S 3 simultaneously?

Options

  1. AB will start collapsing with volumes of A and C increasing
  2. BC will start collapsing with volumes of A and B increasing
  3. CC and A both will start collapsing with the volume of B increasing
  4. DVolumes of A , B and C will become equal at equilibrium

Correct answer

A. B will start collapsing with volumes of A and C increasing

Step-by-step solution

Excess pressure inside soap bubble is inversely proportional to the radius of bubble i.e. Δ P ∝ 1 r This means that bubbles A and C posses greater pressure inside it than B . So the air will move from A and C towards B .

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