Solve 49
Q.49. In a Young's double slit experiment, the separation between the slits is 4$\times {10}^{-3}$ m and the distance of the screen from the plane of the slit is 2 m. Light of wavelength in the range 2000$A°$ to 8000$°$A is allowed to fall on the slits. The wavelength that will be present on the screen at 5$\times {10}^{-3}$ m from the central maximum is
(a) 3500 $\stackrel{0}{A}$
(b) 2500 $\stackrel{0}{A}$
(c) 4500 $\stackrel{0}{A}$
(d) 6500 $\stackrel{0}{A}$