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Question

What is the reason for the heat being produced when we rub our hands?


  1. Magnetism
  2. Gravitation
  3. Friction
  4. Both B and C


Solution

The correct option is C Friction

Friction is a force which acts at the surfaces of contact when one body moves upon another body. When objects like hands come in contact and move against each other, they produce friction. Friction causes the hands to warm up when rubbed together. The greater the amount of friction between two objects more will be the heat generation.

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