Evaluate what is the unknown wavelength

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In a double-slit experiment, two parallel slits are illuminated first by light of wavelength 474 nanometer, and then by light of unknown wavelength. The third-order (m = 3) dark fringe resulting from the known wavelength of light falls in the similar place on the screen as the second-order (m = 2) bright fringe from the unknown wavelength. Evaluate what is the unknown wavelength?

Reference no: EM13679377

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