Question:
The separation between the consecutive dark fringes in a Young's double slit experiment is $1.0 \mathrm{~mm}$. The screen is placed at a distance of $2.5 \mathrm{~m}$ from the slits and the separation between the slits is $1.0 \mathrm{~mm}$. Calculate the wavelength of light used for the experiment.
Solution:
