Question

Statement: Bragg's reflection can occur only when $\lambda \le 2d$.

State whether the given statement is true or false.

• A. True
• B. False

Answer 1

The correct option is A True

As we know, Bragg's equation is $n\lambda =2\text{d sin}\theta$

This equation is applicable only when $\lambda \le 2d$ because $-1<\text{sin}\theta >1$.

Hence, the given statement is $\text{true}$