MHT CET 2026 Physics question

A liquid is at rest in a container. In a sphere of influence, the liquid molecule at its centre is

(A)attracted by other molecules in the sphere of influence.Correct
(B)attracted by other molecules outside sphere of influence.
(C)repelled by other molecules outside the sphere of influence.
(D)repelled by other molecules in the sphere of influence.

Answer: (A)

Solution

The sphere of influence of a molecule is a sphere of radius about m (molecular range) around it; only the molecules inside this sphere exert an appreciable cohesive force on the central molecule. These forces are attractive, and for a molecule well inside the liquid they act from all directions so that they

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Question ID VK-099313