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प्रश्न
Define the surface tension of a liquid.
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उत्तर
Surface tension is defined as the force acting on a unit length of an imaginary line drawn on the free surface of the liquid, the direction of the force being perpendicular to the line so drawn and acting parallel to the surface.
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संबंधित प्रश्न
The contact angle between pure water and pure silver is 90°. If a capillary tube made of silver is dipped at one end in pure water, will the water rise in the capillary?
By a surface of a liquid we mean
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