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SS1: PHYSICS – 3RD TERM

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  1. Production of Electric Current | Week 1
    6 Topics
    |
    1 Quiz
  2. Electric Current | Week 2
    5 Topics
    |
    1 Quiz
  3. Electrical Resistance of a Conductor | Week 3
    5 Topics
    |
    1 Quiz
  4. Particulate Nature of Matter | Week 4
    5 Topics
    |
    1 Quiz
  5. Crystalline and Non-crystalline Substances | Week 5
    3 Topics
    |
    1 Quiz
  6. Elastic Properties of Solids | Week 6 & 7
    4 Topics
    |
    1 Quiz
  7. Fluids at Rest & in Motion | Week 8 & 9
    6 Topics
    |
    1 Quiz
  8. Solar Collector
    3 Topics
    |
    1 Quiz



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When tubes of different diameters are dipped in clean water in a bath, it is observed that water rises in the tubes but the narrower the hole or bore, the higher the height to which water rises.

When the above process is repeated with mercury as the solution, the mercury level is lowered below the mercury outside the tube, the narrower the tube, the lower the mercury level. This phenomenon of the rise and fall of a liquid in capillary tubes is referred to as capillarity.

Screen Shot 2020 10 25 at 9.27.29 PM
Capillary action of water and mercury.

Capillarity is the tendency of a liquid to rise or fall in a narrow tube.

The two forces that bring about capillarity are cohesion force and adhesion force.

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