9) A simple cubic crystal is illuminated with x-ray of wavelength 0.09 nm at a glancing angle. Thecrystal is rotated and the angle at which Bragg reflection occurs are measured.a. Which set of crystal planes will give the smallest angle for the first order reflection?b. If this angle is 8.9°, determine the spacing between these planes.c. At what angle will first order reflection be obtained from the (110) crystal planes. Willthere be any higher order reflection from this plane?

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