Condensed Matter Physics-Diffraction and the Structure Factor (CSIR (Council of Scientific & Industrial Research) Physical Sciences): Questions 1 - 3 of 3

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Passage

A narrow beam of X – rays with wavelength is reflected from an ionic crystal with an fcc lattice structure with a density of . The molecular weight is . (June)

Question number: 1 (1 of 2 Based on Passage) Show Passage

» Condensed Matter Physics » Diffraction and the Structure Factor

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Appeared in Year: 2011

MCQ▾

Question

The lattice constant is –

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 2 (2 of 2 Based on Passage) Show Passage

» Condensed Matter Physics » Diffraction and the Structure Factor

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Appeared in Year: 2011

MCQ▾

Question

The sine of the angle corresponding to reflection is:

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 3

» Condensed Matter Physics » Diffraction and the Structure Factor

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Appeared in Year: 2016

MCQ▾

Question

Consider a one – dimensional chain of atoms with lattice constant . The energy of an electron with wave – vector is , where and are constants. If an electric field is applied in the positive direction, the time dependent velocity of an electron is:

(In the following is the constant) (December)

Choices

Choice (4)Response

a.

proportional of

b.

proportional to

c.

independent of

d.

proportional to

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