In YDSE fringes are obtained using light of wavelength 4800 A^(@). One slit is covered with a thin glass film on refractive index 1.4 and another slit is covered by a film of same thickness but refractive index 1.7. By doing so the central fringe is shifted to fifth bright fringe in the original pattern. The thickness of glass film is x xx 10^(-3)mm, what is the value of x ?

In YDSE fringes are obtained using light of wavelength 4800 A^(@). One

1.	In YDSE fringes are obtained using light of wavelength 4800 A^(@). One slit is covered with a thin glass film on refractive index 1.4 and another slit is covered by a film of same thickness but refractive index 1.7. By doing so the central fringe is shifted to fifth bright fringe in the original pattern. The thickness of glass film is x xx 10^(-3)mm, what is the value of x ?
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