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

Solution

## The correct option is C The order of reflectionW.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.Physics

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