JAMB Physics 2003 Question 8

Question 8

Structure of Matter and Kinetic Theory

Water does not drop through an open umbrella of silk material unless the inside of the umbrella is touched. This is due to

  1. A.capillarity
  2. B.osmotic pressure
  3. C.viscosity
  4. D.surface tension.
Show the answer and explanation

Answer: D (surface tension.)

Explanation

Surface tension makes a skin of water across the tiny gaps in the cloth; touching it breaks the film and water leaks through.