Question

derive brag's equation ​

Answer 1

exactly! correct question. Hehe sorry in not in a great mood

Answer 2

A simple way to derive the Bragg equation is as follows. The path difference between electrons scattered from adjacent crystal planes is 2d sin θ. For constructive interference between the two scattered beams the difference must be an integer multiple of electron wavelengths, nλ which gives the Bragg equation.