Multiple Choice Questions (MCQ)
1. The Miller indices of a plane that makes intercepts of 2a, 3b and 4c along the
three crystallographic axes (where a, b, c are primitive translation vectors of the
lattice) are:
(a) (643)
(b) (346)
(c) (234)
(d) (432)
2. The Miller indices of a plane that makes intercepts as 3a: 4b on the x and y
axes, while parallel to z-axis is:
(a) (340)
(b) (430)
(c) (304)
(d) (403)
3. In an orthorhombic crystal with a: b: c = 1: 2: 5, a plane cuts intercepts of 3Å,
4Å, and 5Å on its coordinate axes. The Miller indices of the plane is:
(a) (125)
(b) (521)
(c) (236)
(d) (345)
4. In a crystal whose primitive translations are 1.2Å, 1.8Å and 2Å, a plane with
Miller indices (231) cuts an intercept of 1.2Å along the x-axis. The lengths of
intercepts along y and z-axes are:
(a) 1.2Å and 1.2Å
(b) 1.2Å and 1.8Å
(c) 1.2Å and 2Å
(d) 1.2Å and 4Å
5. In a cubic crystal, the lengths of the intercepts made by a plane with Miller
indices 1 32
ð
Þ on three axes are:
(a) 6:2:3
(b) 6:3:2
(c) 3:2:1
(d) 1:3:2
4.5 Zone and Zone Axis
169