Ashok Kumar Nehra posted an Question
February 27, 2021 • 22:08 pm 30 points
  • CSIR NET
  • Physical Sciences

For a three dimensional crystal having n primitive unit cells with a basis of p-atoms , the number of optica branches is:- 1) 3 2) 3p 3) 3p-3 4) 3n-3p

For a three dimensional crystal having N primitive unit cells with a basis of p-atoms , the number of optica branches is:- 1) 3 2) 3p 3) 3p-3 4) 3N-3p

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