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  1. X - rays are used for the study of crystal structure because
    1. X - rays are completely absorbed by the crystal
    2. The wavelength of X - rays is of the same order of magnitude as the interatomic spacing in crystals
    3. The wavelength of X - rays is very small in comparison with the interatomic spacing in crystals
    4. The crystals are completely transparent to X - rays
Correct Option: B

NA


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