Home › Bihar Board Class 12 (Science) › Physics › Wave Optics › The rainbow pattern seen on a CD or DVD surface …
The rainbow pattern seen on a CD or DVD surface arises because its closely spaced tracks act as what?
AA diffraction grating
BA polarizing filter
CA plane glass slab
DA triangular prism
Answer & Solution
Correct answer: A. A diffraction grating
The regularly spaced tracks diffract light of different colours into different directions.
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