Q. When a sound wave goes from one medium to another, the quantity that remains unchanged is
A) Frequency
B) Amplitude
C) Wavelength
D) Speed
Explanation
(a) Frequency of wave is a function of the source of waves. Therefore, it remains unchanged.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.