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PhysicsNEET 2023Surface tension, capillarity, excess pressure

Mechanical Properties of Fluids

The amount of energy required to form a soap bubble of radius 2 cm from a soap solution is nearly (surface tension of soap solution =0.03 N m−1= 0.03\ \mathrm{N\,m^{-1}}):

  1. A.30.16×10−430.16 \times 10^{-4} J
  2. B.5.06×10−45.06 \times 10^{-4} J
  3. C.3.01×10−43.01 \times 10^{-4} J✓
  4. D.50.1×10−450.1 \times 10^{-4} J

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