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If a sound wave goes from a cold air region to a hot air region,...

Physics
JAMB 1999

If a sound wave goes from a cold air region to a hot air region, its wavelength will

  • A. increase
  • B. decrease
  • C. decrease then increase
  • D. remain constant
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Correct Answer: Option A
Explanation

When a sound wave moves from a region of cold air to a region of hot air, its wavelength will increase. This occurs because sound travels more quickly in warmer air due to the heightened energy of the air molecules, which allows for a longer wavelength while the frequency remains unchanged.


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