Question

How do you find the order of interference?

Answer 1

Explanation:

The order of interference occurs in the following steps:

1. The geometry of the fringe pattern is depicted in the diagram. If a wavelength of light travels through two slits spaced apart by a certain amount $d$,we will see distant interference that is positive at certain angles. $L«d$back of the slit. Applying the need for constructive interference, which is as follows:

$\Rightarrow \mathrm{dsin}\left(\mathrm{\theta }\right)=\mathrm{m\lambda }$

Where, $d$ is the distance between two slits, $\sin \left(\theta \right)$ is the angle between them, $\lambda$ is the wavelength, and $m$ is the order of interference.

Hence, by this equation we find the order of interference.