Q. Sound waves of wavelength greater than that of audible sound are called
A) Seismic waves
B) Sonic waves
C) Ultrasonic waves
D) Infrasonic waves
Explanation
(d) Infrasonic waves have frequency less than ($20\ Hz$) audible sound and wavelength more than audible sound
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.