When liquid rises inside a capillary tube,the weight of liquid in the tube is supported....... a)by atmospheric pressure b)partly by atmospheric pressure and partly by surface tension c) entirely by the force due to surface tension d) partly by the force due to surface tension
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The correct answer is:-partly by atmospheric pressure and partly by forces of surface tension
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It has no component perpendicular to the horizontal surface. As a result, there is no pressure difference between the liquid side and the vapour side. ... Thus, there is always an excess of pressure on the concave side of a curved liquid surface over the pressure on its convex side due to surface tension.
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