railway RRB JE (CBT I + CBT II) Mock Test 2024 Engineering Materials Science Structure and Properties of Engineering Materials Crystal Structures
What is the diameter of the largest sphere in terms of lattice parameter α, which will fit the void at the center of the cube edge of a BCC crystal?
1
0.134 α
2
0.25 α
3
0.433 α
4
0.5 α