Q4
In a cubic crystal, atoms of mass M1 lie on one set of planes and atoms of mass M2 lie on planes interleaved between those of the first set. If C is the forte constant between nearest neighbour planes, the frequency of lattice vibrations for the optical phonon branch with wave vector k = 0 is
A.
Answer
B.
C.
D.
zero
Answer: Option A
Solution
Answer: Option A
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