26. Show that in a cubic lattice the distance between the successive planes of indices (hkl) is given by a %3D (h? + k? + 1?)U2 Find the interplanar spacing for the lattice planes of Miller indices (321), (210) and (111) for a cubic lattice with a = 5.62Å Ans. 1.50Å, 2.51Å and 3.25Å.
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