on which principle , ball pen functions

Options :
  1. viscosity
  2. gravitational force
  3. capillary action
  4. none of the above


Answer and Explanation :-

Answer: Option 2

Explanation:

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Responses


By: rajappan On: Apr/26/2015

4. none of the above

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...happiness does not consist in amusement. In fact, it would be strange if our end were amusement, and if we were to labor and suffer hardships all our life long merely to amuse ourselves.... The happy life is regarded as a life in conformity with virtue. It is a life which involves effort and is not spent in amusement....
-Aristotle