Q. Beats are produced with the help of two sound waves of amplitudes 3 and 5 $units.$ The ratio of maximum to minimum intensity in the beats is
A) 2 : 1
B) 5 : 3
C) 4 : 1
D) 16 : 1
Explanation
(d) $\frac{I_{\max}}{I_{\min}} = \left( \frac{a_{1} + a_{2}}{a_{1} - a_{2}} \right)^{2} = \frac{(5 + 3)^{2}}{(5 - 3)^{2}} = \frac{16}{1}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.