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Monochromatic high energy x-rays are incident on a crystal. If 1st order reflection is observed at an angle (3.4)0, at what angle would 2nd order reflection be expected.

Mumbai University > First Year Engineering > Sem 1 > Applied Physics 1

Marks: 3M

Year: Dec 2015

1 Answer
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Since, 1st order reflection is observed at an angle (3.4)0

According to reflection formula,

nλ = 2d sinӨ

So, for 1st order reflection

1λ = 2 d sin3.4

λ/d = 2 x sin3.4=0.1186

Hence for 2nd order reflection,

2λ = 2d sinӨ

sinӨ = 0.1186

Ө = 6.81

Hence, 2nd …

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