If a sound wave goes from a cold air region to a hot air ...
If a sound wave goes from a cold air region to a hot air region, its wavelength will
increase
decrease
decrease then increase
remain constant
Correct answer is B
If a sound wave goes from a cold air region to a hot air region (which will be less dense), the velocity decreases, and since the frequency is always constant, the wave length decreases with the velocity
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