Question: The radius of the largest sphere which fits properly at the centre of the edge of body centred cubic unit cell is : (Edge length is represented by 'a') :-
$0.134 \mathrm{a}$
$0.027 \mathrm{a}$
$0.067 \mathrm{a}$
$0.047 \mathrm{a}$
Correct Option: , 3
Solution:
