Wavelength of X-rays falling at glancing angle of 30? on a crystal with atmic spacing 2 x 10-10 for the fist order diffraction is________________?
(A) 4 x 10-10 m
(B) 2 x 10-10 m
(C) 0.02×10-10m
(D) 20×10-10m
Wavelength of X-rays falling at glancing angle of 30? on a crystal with atmic spacing 2 x 10-10 for the fist order diffraction is________________?
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