The rainbow of colours you see on a CD comes from:
APolarisation
BReflection only
CAbsorption
DDiffraction
Answer & Solution
Correct answer: D. Diffraction
1. The CD surface has very fine closely spaced tracks.
2. Light bends round them differently for each colour.
3. The colours come from diffraction.
_Source: NCERT Class 12 Physics Part II, Chapter 10, Wave Optics._
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