In a Young's double-slit experiment, the slit separation is 0.2 mm and the distance between the screen and double-slit is 1.0 m. wavelength of light used is 5000 Å. The distance between two consecutive dark fringes is

In a Young's double-slit experiment, the slit separation is 0.2 mm and

1.	In a Young's double-slit experiment, the slit separation is 0.2 mm and the distance between the screen and double-slit is 1.0 m. wavelength of light used is 5000 Å. The distance between two consecutive dark fringes is
Answer» 2.5 mm 4.0 mm 5.0 mm 0.25 mm Solution :`d=0.2mm=0.2xx10^(-3)m,D=1.0m and lamda=5000` Å`=5000xx10^(-10)m` `therefore`Distance between two CONSECUTIVE dark FRINGES`=BETA=(lamdaD)/(d)=(5000xx10^(-10)xx1.0)/(0.2xx10^(-3))` `=2.5xx10^(-3)=2.5mm`

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In a Young's double-slit experiment, the slit separation is 0.2 mm and the distance between the screen and double-slit is 1.0 m. wavelength of light used is 5000 Å. The distance between two consecutive dark fringes is

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