Bragg's Law

Braggs Law

Which of the following is correct regarding X-rays (i) X-rays are electromagnetic radiation (photon) of short wavelength. X-rays move in straight lines in vacuum at a speed equal to that of light (ii) Since X-rays are charge-less particles and therefore not deflected by electric or magnetic fields (iii) X-rays are diffracted by crystals in accordance with Bragg's law. The Bragg's law states 2 d sin theta=n lambda , where n is integer. theta is the angle at which X-ray is incident on the plane of atoms, d: distance between the parallel planes of atom (iv) X-rays affect a photographic plate more strongly than visible light

Bragg's Equation

Bragg's equation for diffraction is

The solution of Bragg's equation is possible if :

The solution of Bragg's equation will not exist if

Bragg's X- rays diffraction studees are successful when

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