The distance between two consecutive atoms of the crystal lattice is `1.227Å`. The maximum order of diffraction of electrons accelerated through `10^(4)` volt is :

Options

A. 1
B. 100
C. 10
D. 20

Answer

C

Explanation

`d sin theta =n lambda`
`n_("max")=(d)/(lambda)=(d)/((12*27)/(sqrt(V)))=10`