Question

Q) it is given that the . phase of a plane wave is same at the point (1,4,6 ) . (0,3,7) and(3,2,8) and the wavelength is 1.54 A the coordinates of the three points are in A unit

a)find the wave vector K

b)if this wave is diffracted . by a simple . cubic monoatomic lattice with edge length 2.17 pi A find the wave vector of the waves reflected from (1,0,0) planes which give constructive

interference.

Answer 1