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A diffraction grating has 500 lines per millimetre and illuminated normally by monochromatic light of wavelength `600\ nm`. The total number of image seen on both side of normal, including central image is
A diffraction grating has 500 lines per millimetre and illuminated normally by monochromatic light of wavelength `600\ nm`. The total number of image seen on both side of normal, including central image is
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