The potential energy of a molecule on the surface of a liquid compared to the molecules inside the liquid is

The potential energy of a molecule on the surface of a liquid compared to the molecules inside the liquid is
  1. zero
  2. less
  3. same
  4. large

Solution

As these molecules reach the surface work is done against the cohesive force. This work is stored in the molecules in the form of potential energy . Thus, the potential energy of the molecules lying in the surface is greater than that of the molecules in the interior of the liquid. .

Asked in: MHT CET 2023 (14 May Shift 1)

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