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      Question

      Two spherical soap bubbles of radii r1 and r2 coalesce

      to form a bubble of radius R. If surface tension of soap solution is T, atmospheric pressure is P. change in volume of the air enclosed is V and the change in surface area is A'. Complete the expression using above statement, 3PV + _____ = 0
      A 8TP Correct Answer Incorrect Answer
      B 4TP Correct Answer Incorrect Answer
      C 2TA Correct Answer Incorrect Answer
      D 4TA Correct Answer Incorrect Answer

      Solution

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