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(i) Drops of liquid are spherical in nature. Explain.(ii) Mention the effect of temperature on surface tension. |
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Answer» (i) Liquid tends to have a minimum surface area due to surface tension. For a given volume of a liquid, sphere has the minimum surface area. So, the small drops of liquid are spherical in nature. (ii) Surface tension decreases with increase in temperature because force acting per unit length decreases due to increase in kinetic energy of molecules. |
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