B) Maximum beat frequency audible to a human being is 20
C) Beats are as a result of Doppler’s effect
D) Beats are due to superposition of two waves of nearly equal frequencies
Explanation
(d) Beats are the periodic and repeating function heard in the intensity of sound when two sound waves of very similar frequency interface with one another.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.