The Solid State - Result Question 9
####9. For orthorhombic system, axial ratios are $a \neq b \neq c$ and the axial angles are
(a) $\alpha=\beta=\gamma \neq 90^{\circ}$
[1991]
(b) $\alpha=\beta=\gamma=90^{\circ}$
(c) $\alpha=\gamma=90^{\circ}, \beta \neq 90^{\circ}$
(d) $\alpha \neq \beta \neq \gamma=90^{\circ}$
Topic 3: Cubic System and Bragg’s Equation
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Solution:
- (b) For orthorhombic system $\alpha=\beta=\gamma=90^{\circ}$
