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Q.

Calculate the Weiss and miller indices of crystal planes which cut through the crystal axes at (2a, b, c)

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a

[2, 2, 2]

b

[1,2,1]

c

[2, 1, 1]

d

[1,2,2]

answer is D.

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Detailed Solution

	X-axis	Y-axis	z-axis
Intercepts	2a	b	c
Wiess indices	$\frac{2 a}{a} = 2$	$\frac{b}{b} = 1$	$\frac{c}{c} = 1$
Reverse	$\frac{1}{2}$	$\frac{1}{1}$	$\frac{1}{1}$
Miller indices	$\frac{1}{2} \times 2 = 1$	$1 \times 2 = 2$	$1 \times 2 = 2$

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