NEET Physics Surface Tension MCQ Question
Which of the following statements about surface tension is correct?
Surface tension causes liquid drops to be spherical when gravity is negligible.
Surface tension increases when a wetting agent is added to a liquid.
The angle of contact between a liquid and solid is always acute.
Surface molecules have lower energy than molecules in the bulk of the liquid.
Correct Answer
Detailed Explanation
Statement A is correct as it reflects the behavior of liquid drops due to surface tension. Statement B is incorrect because wetting agents decrease surface tension. Statement C is misleading since the angle of contact can vary based on interactions. Statement D is incorrect; surface molecules have extra energy compared to those in the bulk.
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