Physics-Surface Tension

NEET Physics Surface Tension MCQ Question

Type: MCQ-conceptual-Hard-Class 11

Which combination of statements about surface tension is correct?

A

(c) Surface tension of a liquid is independent of the area of the surface. (e) A drop of liquid under no external forces is always spherical in shape.

B

(a) Surface tension of liquids generally increases with temperatures. (d) Water with detergent dissolved in it should have small angles of contact.

C

(b) Viscosity of gases decreases with temperature, whereas viscosity of liquids increases with temperature. (c) For solids with elastic modulus of rigidity, the shearing force is proportional to shear strain.

D

(d) Water with detergent dissolved in it should have small angles of contact. (e) A drop of liquid under no external forces is always spherical in shape.

Correct Answer

Option A

Detailed Explanation

Statement (c) is correct as surface tension is independent of surface area, and statement (e) is correct because a drop of liquid assumes a spherical shape under no external forces due to surface tension.

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