00:01
In the given question, the lattice type is bcc.
00:05
Therefore, the directions you can get as 0 .1.
00:11
Let's see the structure of the bcc unit.
00:13
Here we can say in bcc unit 011, this side is represented a on the x and y and z axis.
00:20
The value of r is given 0 .141 nano -beter.
00:25
For the bcc according to pythover stadium, the value of b square is equal to a square plus a, so you can write it as a 2a square is equal to p square.
00:36
Now as the body diagonal is 4r, you just have to keep this, this value of p is nothing but body diagonal.
00:44
4r whole square is equal to p square plus a square.
00:52
So 4r square whole square is equal to instead of p you can write 2a square plus this scale...