In a single slit diffraction pattern, a light of wavelength 6000 is used. The distance between the first and third minima in the diffraction pattern…

In a single slit diffraction pattern, a light of wavelength $\displaystyle 6000 \AA$ is used. The distance between the first and third minima in the diffraction pattern is found to be $\displaystyle 3$ mm when the screen in placed $\displaystyle 50$ cm away from slits. The width of the slit is $\displaystyle \_\_\_\_$ $\displaystyle \times 10^{-4} \mathrm{~m}$.