GATE MT concept:ray-diffraction PYQs & Answers

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concept:ray-diffraction

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Questions 1–4 of 4. Imported answers require independent review unless marked reviewed.

Topic practice 4 questionsPage 1 of 1

Which of the following

reflections is/are allowed in X-ray diffraction pattern of a crystal with face centered cubic lattice?

Your answerSelect all correct options. You can choose more than one.

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In the X-ray diffraction pattern of a FCC crystal, the first reflection occurs at a Bragg angle (θ) of 30°. The Bragg angle (in degree) for the second reflection will be: __________ (round off to 1 decimal place).

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X-ray diffraction pattern from an element metal with a FCC crystal structure shows the first peak at a Bragg angle

. The lattice parameter of this metal is ______ nm.

Given, wavelength of the X-ray used is 0.1543 nm.

Your answerChoose one option.

0.185

0.262

0.320

0.370

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The second peak in the powder X-ray diffraction pattern of a FCC metal occurs at a Bragg angle θ (in degrees) = __________ (answer up to two decimal places)

(Given: λ_CuKα = 0.154 nm; lattice parameter of the metal = 0.36 nm)

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GATE MT concept:ray-diffraction PYQs

How to practice concept:ray-diffraction

Question 30

Question 21

Question 34

Question 19