What is the difference between these wavelengths

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Visible light passes through a diffraction grating that has 900 slits per centimeter, and the interference pattern is observed on a screen that is 2.46m from the grating. In the first-order spectrum, maxima for two different wavelengths are separated on the screen by 3.16mm . What is the difference between these wavelengths?

Reference no: EM13319289

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