# The radius of the largest sphere which fits properly at

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') :-

1. $0.134 \mathrm{a}$

2. $0.027 \mathrm{a}$

3. $0.067 \mathrm{a}$

4. $0.047 \mathrm{a}$

Correct Option: , 3

Solution: