Question: The commonly used CD (Compact Disc) consists of many closely spaced tracks that can be used as reflecting gratings. The industry standard for the track-to-track

The commonly used CD (Compact Disc) consists of many closely spaced tracks that can be used as reflecting gratings. The industry standard for the track-to-track distance is 1.6μm. If a He–Ne laser with a wavelength of 632.8 nm is incident normally onto a CD, calculate the angles for all the visible maxima.

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