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The lowest angle reflection in a powder diffraction experiment or an...

This question belongs to Metallurgical Engineering Physics Of Metals In Metallurgy
Physics of Metals in Metallurgy
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The lowest angle reflection in a powder diffraction experiment or an fcc metal using Cu-Ka radiation (y = 1.54°A) occured at an angle of 19°30'. The lattice parameter of the metal is . . . . . . . . °A.

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Correct Answer: Option D
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