A) \[1.27\overset{o}{\mathop{\text{A}}}\,\]
B) \[5.08\overset{o}{\mathop{\text{A}}}\,\]
C) \[2.54\overset{o}{\mathop{\text{A}}}\,\]
D) \[3.57\overset{o}{\mathop{\text{A}}}\,\]
Correct Answer: D
Solution :
Interactive spacing for fee lattice \[r={{\left[ {{\left( \frac{q}{2} \right)}^{2}}+{{\left( \frac{q}{2} \right)}^{2}}+{{(0)}^{2}} \right]}^{1/2}}\] \[=\frac{q}{\sqrt{2}}\] Being lattice contact \[q=\sqrt{2}r=\sqrt{2}\times 2.84\] \[=3.5\overset{o}{\mathop{\text{A}}}\,\]
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