A) 0.027 a
B) 0.134 a
C) 0.047 a
D) 0.067 a
Correct Answer: D
Solution :
\[a=2(R+r)\Rightarrow \frac{a}{2}=(R+r)\] ?(i) For\[bcc,\sqrt{3}a=4R\] ?(ii) Using (i) and (ii) \[\frac{a}{2}=\frac{a\sqrt{3}}{4}+r\Rightarrow r=\frac{a}{2}-\frac{a\sqrt{3}}{4}=a\left( \frac{2-\sqrt{3}}{4} \right)\] \[r=0.067a\]You need to login to perform this action.
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