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ICSE Class 7 Physics Question 3 of 25

Energy — Question 4

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4
Question

Question 4a

Select the correct alternative:

When we rub our hands

  1. kinetic energy changes into potential energy
  2. mechanical energy changes into heat energy
  3. potential energy changes into kinetic energy
  4. heat energy changes into mechanical energy
Answer

mechanical energy changes into heat energy

Reason — When we rub our hands we feel heat i.e. mechanical energy changes into heat energy.