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
Verified Correct Answer: B.
Physical Principles & Numerical Solution
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.
Source: Myschool Past Questions Archive (Record #28622)