O-LevelPhysicsWaves5054/11 · Oct/Nov 2017 · Q251 Mark
As a sound wave travels from one medium to another, its wavelength increases. What happens to the frequency and to the speed of the sound?
Afrequency: decreases, speed: decreases
Bfrequency: decreases, speed: increases
Cfrequency: stays constant, speed: increases
Dfrequency: stays constant, speed: decreases
✓ Correct answer
D: frequency: stays constant, speed: decreases
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