Condensed Matter Physics - BU 2021 Question Paper

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M.Sc. II^nd Semester (CBCS) Examination, 2021

Physics

Paper - PT-202

Condensed Matter Physics

[Maximum Marks : 60

Note :- All questions from each section carry equal marks. All questions are compulsory and answer limit are approximately 250 words. Start the answer of each section from new page. Maximum limit of pages of answer booklet are approximately 16 pages. Answer should be written by the student in his/her own handwriting mandatory. The first page of answersheet should be download by the student from university website is mandatory.

Define Bragg's law. Calculate the wavelength for first order spectrum if the angle of incidence is 30 degrees.

What is a Brillouin zone? What is the significance of a brillouin zone ?

Define the density of states (DOS).

Explain Dispersion relations.

Write a short note :-

(a)

Reciprocal lattice