Question

In the Bragg's equation for diffraction of X-rays, $n$ represents for

• A. The number of mole
• B. Quantum number
• C. The order of reflection
• D. Avogadro's number

Answer 1

The correct option is C The order of reflection

W.L. Bragg and W.H. Bragg worked out and gave a mathematical relation to determine inter-atomic distance from X-ray diffraction pattern.

Braggs equation is $n\lambda =2d\sin \theta$

where $n$ is an integer i.e. $1,2,3,4$ etc. which represents order of reflection.

Hence, option C is correct.