NEET Physics Surface Tension MCQ Question
Which of the following statements about surface tension are correct?
Surface tension causes liquid drops to form a spherical shape in the absence of gravity.
A larger angle of contact between water and a solid indicates strong attraction between the molecules.
Soaps and detergents increase the angle of contact, making liquids less effective at wetting surfaces.
Surface tension is defined as the energy required to increase the surface area of a liquid.
Correct Answer
Detailed Explanation
Statement A is correct as surface tension results in spherical drops when gravity is negligible. Statement B is incorrect; a larger angle indicates weaker attraction. Statement C is wrong because soaps decrease the angle of contact, enhancing wetting. Statement D is partially correct but lacks context about the unit area.
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