Question

If (hkt) represent the Miller indices of a plane in a cubic crystal, its distance of separation between the adjacent parallel planes is

• A. $\frac{a}{h^2 + k^2 + l^2}$
• B. $\frac{h^2 + k^2 + l^2}{a}$
• C. $\frac{a}{\sqrt{h^2 + k^2 + l^2}}$
• D. $\frac{\sqrt{h^2 + k^2 + l^2}}{a}$

Answer 1

Answer: (C)

The perpendicular distance of plane (hkl) from origin or distance of separation of parallel adjacent planes of a cubic crystal is given by
$d = \frac{a}{\sqrt{h^2 + k^2 + l^2}}$