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  3. Chemistry
  4. The second order Bragg’s diffraction of X-rays of wavelength 100 pm from a set of parallel lattice planes in a metal occurs at a grazing angle of 30°. The spacing between the successive scattering planes in the cystal is

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Q. The second order Bragg’s diffraction of X-rays of wavelength 100 pm from a set of parallel lattice planes in a metal occurs at a grazing angle of $30^{\circ}$. The spacing between the successive scattering planes in the cystal is

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Solution:

d-spacing
$ = \frac{n \lambda}{2 \sin \, \theta} = \frac{2 \times 100}{2 \times \sin 30^{\circ}} = 200 pm$