Question 93: Wave Optics

Question

In a Young's double slits experiment, the ratio of amplitude of light coming from slits is $2: 1$. The ratio of the maximum to minimum intensity in the interference pattern is:

Accepted Answer

Given the amplitude ratio, $\frac{A_1}{A_2} = \frac{2}{1}$, we can find the maximum and minimum intensities using the formula:
$\frac{I_{max}}{I_{min}} = \left(\frac{A_1 + A_2}{A_1 - A_2}\right)^2$
Substituting the given amplitude ratio:
$\frac{I_{max}}{I_{min}} = \left(\frac{2 + 1}{2 - 1}\right)^2 = \left(\frac{3}{1}\right)^2 = 9$
Thus, the ratio of maximum to minimum intensity in the interference pattern is:
$\frac{I_{max}}{I_{min}} = 9:1$

Answer

25 : 9

Answer

9 : 1

Answer

9 : 4

Answer

2 : 1

Wave Optics

In a Young's double slits experiment, the ratio of amplitude of light coming from slits is 2: 1. The ratio of the maximum to minimum intensity in the interference pattern is:

Choose the correct answer: