Q. Which of the following energy change involves frictional force?
i. Potential energy to sound energy
ii. Chemical energy to heat energy
iii. Kinetic energy to heat energy
iv. Chemical energy to heat energy
Choose the correct option among the following:
  • (A) Both (i) and (ii)
  • (B) Only (iv)
  • (C) Both (ii) and (iii)
  • (D) Only (iii)
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βœ… Correct Answer: (D) Only (iii)

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