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All X-ray beam of wavelength 1.7 Å is diffracted by a cubic KC1 ciystal of density 1.99 x 103 kg m-3. The interplance spacing for (200) planes and the glancing angle for the second order reflection from these planes will be (given that molecular weight of KC1 is 74.6 amu)
  • a)
    3.145 Å and 45°
  • b)
    3.145 Å and 30°
  • c)
    1.145° and 90°
  • d)
    1.145 Å and 30°
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
All X-ray beam of wavelength 1.7 Å is diffracted by a cubic KC1c...
For cubic crystal we have

n' = 4 because KC1 has fee structure
a = 6.29 x 10-10 m

From Bragg's law, 2d sin θ = nλ
n = 2
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All X-ray beam of wavelength 1.7 Å is diffracted by a cubic KC1ciystal of density 1.99 x 103 kg m-3. The interplance spacing for (200) planes and the glancing angle for the second order reflection from these planes will be (given that molecular weight of KC1is 74.6 amu)a)3.145 Å and 45°b)3.145 Å and 30°c)1.145° and 90°d)1.145 Å and 30°Correct answer is option 'B'. Can you explain this answer?
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All X-ray beam of wavelength 1.7 Å is diffracted by a cubic KC1ciystal of density 1.99 x 103 kg m-3. The interplance spacing for (200) planes and the glancing angle for the second order reflection from these planes will be (given that molecular weight of KC1is 74.6 amu)a)3.145 Å and 45°b)3.145 Å and 30°c)1.145° and 90°d)1.145 Å and 30°Correct answer is option 'B'. Can you explain this answer? for GATE 2024 is part of GATE preparation. The Question and answers have been prepared according to the GATE exam syllabus. Information about All X-ray beam of wavelength 1.7 Å is diffracted by a cubic KC1ciystal of density 1.99 x 103 kg m-3. The interplance spacing for (200) planes and the glancing angle for the second order reflection from these planes will be (given that molecular weight of KC1is 74.6 amu)a)3.145 Å and 45°b)3.145 Å and 30°c)1.145° and 90°d)1.145 Å and 30°Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for GATE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for All X-ray beam of wavelength 1.7 Å is diffracted by a cubic KC1ciystal of density 1.99 x 103 kg m-3. The interplance spacing for (200) planes and the glancing angle for the second order reflection from these planes will be (given that molecular weight of KC1is 74.6 amu)a)3.145 Å and 45°b)3.145 Å and 30°c)1.145° and 90°d)1.145 Å and 30°Correct answer is option 'B'. Can you explain this answer?.
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