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MHT CET202120 Sep 2021Evening ShiftPhysicsMechanical Properties of FluidsActual

Air is pushed in a soap bubble to increase its radius from 'R' to ' 2 R '. In this case, the pressure inside the bubble

Options

  1. Adoes not change
  2. Bdecrease
  3. Cbecomes zero
  4. Dincrease

Correct answer

B. decrease

Step-by-step solution

Excess pressure in a soap bubble is given by P = 4 ~T R Hence if radius is increased, the pressure will decrease.

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