A diffraction grating with 10 lines m is used to determine the wavelength of source The angle of first order diffraction is 30

Question

A diffraction grating with 10 lines m is used to determine the wavelength of source The angle of first order diffraction is 30 The wavelength of th monochromatic source is 6 1000 nm c 400 nm b 500 nm d 600 nm

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