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When a sound wave passes from air into water its

Physics
JAMB 1985

When a sound wave passes from air into water its

  • A. speed and frequency increases but its wavelength remains the same
  • B. speed and wavelength increases but its frequency remains the same
  • C. speed decreases
  • D. speed remains the same but its frequency and wavelength change
  • E. speed increases but its frequency and wavelength decreases
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Correct Answer: Option B
Explanation

Speed: The speed of sound is greater in water than in air.

Frequency: The frequency of the sound wave remains constant when it transitions between different mediums.

Wavelength: Since the speed increases while the frequency remains constant, the wavelength must increase as well.

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