NEET Physics Surface Tension MCQ Question
Which of the following statements about surface tension is correct?
Surface tension of a liquid decreases with increasing temperature.
A liquid drop under external forces can take a non-spherical shape.
Soaps and detergents increase the angle of contact between water and surfaces.
A drop of liquid is always spherical in shape due to surface tension.
Correct Answer
Detailed Explanation
Surface tension of liquids generally decreases with increasing temperatures, which is supported by the NCERT context. While a drop of liquid is spherical under no external forces, it can take other shapes under external influences, and soaps and detergents actually decrease the angle of contact.
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