wave_mechanics interference_and_superposition_of_waves Question 19
Question: The two interfering waves have intensities in the ratio 9 : 4. The ratio of intensities of maxima and minima in the interference pattern will be
[AMU 2000]
Options:
A) 1 : 25
B) 25 : 1
C) 9 : 4
D) 4 : 9
Show Answer
Answer:
Correct Answer: B
Solution:
$ \frac{{I _{\max }}}{{I _{\min }}}={{( \frac{\sqrt{\frac{I _{1}}{I _{2}}}+1}{\frac{\sqrt{I _{1}}}{\sqrt{I _{2}}}-1} )}^{2}}={{( \frac{\sqrt{\frac{9}{4}}+1}{\sqrt{\frac{9}{4}}-2} )}^{2}}=\frac{25}{1} $
BETA
