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
Verified Correct Answer: A.
Physical Principles & Numerical Solution
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.
Source: Myschool Past Questions Archive (Record #559)