Question

How do you find the slit width of a double slit?

Answer 1

Explanation:

1. For Young’s double-slit experiment, to determine the slit width, we make use of the following equation:
2. If you are given fringe width $B=\frac{\left({\displaystyle \lambda }\times D\right)}{d}$. Where $\lambda =$wavelength, $D=$the distance between screen and plane of the slit, $d=$slit width, and $B=$fringe width
3. The waves emanating from two holes at a fixed location on the screen have different phases, which interact to form a pattern of light and dark patches.
4. Due to this change in intensity, the light waves emanating from the two holes were visible on a flat screen.