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MHT CET202210 Aug 2022Morning ShiftPhysicsMechanical Properties of FluidsActual

A square wire frame of each side L is dipped in soap solution. On taking out, a membrane is formed. If the surface tension of solution is T , the force acting on the frame will be

Options

  1. A8 T L
  2. B10 T L
  3. C2 T L
  4. D54 T L

Correct answer

A. 8 T L

Step-by-step solution

The perimeter of square is 4 L . So, including both sides, the total length will be 8 L . If T is surface tension (force per unit length) then the total force will be 8 T L

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