In a Young's double slit experiment, the interference fringes are obtained on a screen 0.75 m apart. The third dark band is at a distance of 5.5 mm from the central fringe (a) Determine the wavelength of light used if the two slits are 0.15 mm apart. (b) What will be the wavelength of light used if the entire apparatus is immersed in a liquid of refractive index 4//3 ?

In a Young's double slit experiment, the interference fringes are obta

1.	In a Young's double slit experiment, the interference fringes are obtained on a screen 0.75 m apart. The third dark band is at a distance of 5.5 mm from the central fringe (a) Determine the wavelength of light used if the two slits are 0.15 mm apart. (b) What will be the wavelength of light used if the entire apparatus is immersed in a liquid of refractive index 4//3 ?
Answer» ANSWER :(a) `4.4 XX 10^(-7)m` (B) `3.3 xx 10^(-7) m`

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