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A peak in the X-ray diffraction pattern is observed at 2...

This question belongs to Metallurgical Engineering Physics Of Metals In Metallurgy
Physics of Metals in Metallurgy
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A peak in the X-ray diffraction pattern is observed at 2θ = 78°, corresponding to [311] planes of an fcc metal, when the incident beam has a wavelength of 0.154 nm. The lattice parameter of the metal is approximately

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Correct Answer: Option B
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