A beam of light consisting of two wavelengths 560 nm and 420 nm is used...
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Physics
A beam of light consisting of two wavelengths 560 nm and 420 nm is used to obtain interference fringes in a Young s double slit experiment Find the least distance from the central maxima where the bright fringes due to both the wavelengths coincide The distance between the two slits is 4 mm and the screen is at a distance of 1 m from the slits a 2 21 mm c 5 22 mm b 0 42 mm d 2 cm 2 cm
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