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Question

A liquid surface always tends to have minimum surface area due to the property of


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Solution

Surface tension:

  1. The tendency of the free surface of liquid always tries to minimize the surface area is known as surface tension.
  2. It arises due to cohesive interactions between the molecules in the liquid.
  3. Surface tension is measured in force per unit length and its SI unit is Newton per meter (Nm-1).

Therefore, a liquid surface always tends to have a minimum surface area due to the property of surface tension.


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