Sodium light of wavelengths 650 nm and 655 nm is used to study diffraction at a single slit of aperture 0.5 mm. The distance between the slit and the…

Sodium light of wavelengths $\displaystyle 650$ nm and $\displaystyle 655$ nm is used to study diffraction at a single slit of aperture $\displaystyle 0.5$ mm. The distance between the slit and the screen is $\displaystyle 2.0$ m. The separation between the positions of the first maxima of diffraction pattern obtained in the two cases is \_\_\_\_ $\displaystyle \times 10^{-5} \mathrm{~m}$.