First three nearest neighbour distances for body centered cubic lattice are respectively: (a) \(...

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First three nearest neighbour distances for body centered cubic lattice are respectively:
(a) \( \sqrt{2} a, a, \sqrt{3} a \)
(b) \( \frac{a}{\sqrt{2}}, a, \sqrt{3} a \)
(c) \( \frac{\sqrt{3} a}{2}, a, \sqrt{2} a \)
(d) \( \frac{\sqrt{3} a}{2}, a, \sqrt{3} a \)
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