Semiconductor Electronics Materials Devices And Simple Circuits Ques 31
31. For a cubic crystal structure which one of the following relations indicating the cell characteristics is correct?
[2007]
(a) $a \neq b \neq c$ and $\alpha=\beta=\gamma=90^{\circ}$
(b) $a=b=c$ and $\alpha \neq \beta \neq \gamma=90^{\circ}$
(c) $a=b=c$ and $\alpha=\beta=\gamma=90^{\circ}$
(d) $a \neq b \neq c$ and $\alpha \neq \beta$ and $\gamma \neq 90^{\circ}$
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Answer:
Correct Answer: 31.(c)
Solution:
- (c) For a cubic crystal,
$a=b=c$ and $\alpha=\beta=\gamma=90^{\circ}$
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