Q. If the ratio of amplitude of two waves is 4 : 3$.$ Then the ratio of maximum and minimum intensity will be
A) 16 : 18
B) 18 : 16
C) 49 : 1
D) 1 : 49
Explanation
(c) $\frac{I_{\max}}{I_{\min}} = \left( \frac{\frac{a_{1}}{a_{2}} + 1}{\frac{a_{1}}{a_{2}} - 1} \right)^{2} = \left( \frac{\frac{4}{3} + 1}{\frac{4}{3} - 1} \right)^{2} = \frac{49}{1}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.