Question
Asked Dec 16, 2019
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9. X-rays reflected off a simple crystal with inter-
atomic spacing of 5x1010
30° to the surface of the crystal show the first
meters at an angle of
order constructive interference. What is the
wavelength of the X-rays?
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9. X-rays reflected off a simple crystal with inter- atomic spacing of 5x1010 30° to the surface of the crystal show the first meters at an angle of order constructive interference. What is the wavelength of the X-rays?

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Expert Answer

Step 1

Given,

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Interatomic spacing,d = 5x10-10 m Angle,0 = 30°

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Step 2

First order constructive interference can be shown below,

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2d sin 0 = n2

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Step 3

For first order construct...

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2d sin 0 = n2 (First order constructive interference) n=1 2(5x10-0)sin 30° = 2a 2 = 5×10-1º m

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