A

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Q. Ball pen functions on the principle of :

  • (A) Viscosity
  • (B) Boyle's Law
  • (C) Gravitational force
  • (D) Surface tension
  • Correct Answer - Option(D)
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  • Filed under category Physics
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Explanation by: Admin
The ballpoint pen is one of the most simple and yet ubiquitous devices whose function depends on surface tension. With a pen held upright, gravity and surface tension act in concert to get ink onto the ball.

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