68th BPSC Prelims (2023), question 113

🔬 Science & Technology

  1. Which of the following energy changes involves frictional force?

    1. Potential energy to sound energy
    2. Chemical energy to heat energy
    3. Kinetic energy to heat energy
    4. More than one of the above
    5. None of the above
    Show answer

    Answer: C — Kinetic energy to heat energy

    Friction converts kinetic energy of relative motion into heat energy.

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