When there is no external force, the shape of a small liquid drop is determined by

density of liquid

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viscosity of air

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surface tension

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elasticity of liquid

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Solution

The correct option is C surface tension
When there is no external force, the shape of a small liquid drop is controlled by surface tension alone. Due to property of surface tension, the surface of liquid tries to contract to acquire minimum possible surface area (so that PE is minimum and drop is stable).

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When there is no external force, the shape of a liquid drop is determined by

When there is no external force, the shape of a liquid drop is determined by its ___ tension.

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