wave_mechanics interference_and_superposition_of_waves Question 18

Question: If the ratio of amplitude of wave is 2 : 1, then the ratio of maximum and minimum intensity is

[MH CET 1999]

Options:

A) 9 : 1

B) 1 : 9

C) 4 : 1

D) 1 : 4

Show Answer

Answer:

Correct Answer: A

Solution:

$ \frac{{I _{\max }}}{{I _{\min }}}={{( \frac{\frac{a _{1}}{a _{2}}+1}{\frac{a _{1}}{a _{2}}-1} )}^{2}}={{( \frac{2+1}{2-1} )}^{2}}=9/1 $