19. the (100) x-ray diffraction peak of a cubic erystal occurs at 0= 19.50°. the (111) diffraction peak will be observed at: (a)9.75 (b) 19.50 (c) 35.77 d). 35.

19. The (100) X-ray diffraction peak of a cubic erystal occurs at 0= 19.50°. The (111) diffraction peak will be observed at: (a)9.75 (b) 19.50 (C) 35.77 d). 35.320