Q. It is possible to hear beats from the two vibrating sources of frequency
A) $100\ Hz$ and $150\ Hz$
B) $20\ Hz$ and $25\ Hz$
C) $400\ Hz$ and $500\ Hz$
D) $1000\ Hz$ and $1500\ Hz$
Explanation
(b) For hearing beats, difference of frequencies should be less than $10\ Hz$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.