In Young's double slit experiment, fringes of width \\beta are produced on the screen kept at a distance of 1 {m} from the slit. When the screen is moved away by 5\times 10^{-2} {m}, fringe width changes by 3 \times10^{-5} {m}. The separation between the slits is 1 \times10^{-3} {m} . The wavelength of light used is......nm.

Manipal Entrance Test 2015 Physics Paper

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In Young's double slit experiment, fringes of width β are produced on the screen kept at a distance of 1m from the slit. When the screen is moved away by 5×10−2m, fringe width changes by 3×10−5m. The separation between the slits is 1×10−3m . The wavelength of light used is......nm.

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