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Physics Medium PMS Uploaded: 06 Aug 2026

What is the term for the total kinetic and potential energy possessed by molecules within a substance?

  • A Heat
  • B Temperature
  • C Internal energy
  • D Specific heat
Correct Answer: Option C — Internal energy
Explanation:
Internal energy represents the sum total of kinetic and potential energy possessed by all the particles within a substance, arising from their random motion and intermolecular interactions, distinct from the substance's overall temperature reading.
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