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Question

The distance between the interatomic lattice plane is 10Ă. The maximum wavelength of X-rays which are diffracted by the crystal will be


A

10Ă

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B

20Ă

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C

30Ă

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D

40Ă

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Solution

The correct option is B

20Ă


Step-1: Given

Distance between the interatomic lattice plane is, d=10Ă

Step-2: Formula

The maximum wavelength of X-rays λmax=2×d

Step-3: Calculation for maximum wavelength of X-rays

λmax=2×dλmax=2×10Ăλmax=20Ă

Hence, Option (B) is the correct option.


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