Condensed Matter Physics-Band Theory of Solids (CSIR Physical Sciences): Questions 1 - 2 of 2

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Question number: 1

» Condensed Matter Physics » Band Theory of Solids » Metals

Appeared in Year: 2012

MCQ▾

Question

The experimentally measured transmission spectra of metal, insulator and semiconductor thin films are shows in the figure. It can be inferred that I, II and III correspond respectively, to – (June)

 Plot of Transmission spectra v/s Wavelength

Plot of Transmission Spectra v/s Wavelength

In figure graph of experimentally measured transmission spectra of metal, insulator and semiconductor thin films are shown.

Choices

Choice (4) Response
a.

Semiconductor, metal and insulator

b.

Insulator, semiconductor and metal

c.

Metal, semiconductor and insulator

d.

Insulator, metal and semiconductor

Question number: 2

» Condensed Matter Physics » Band Theory of Solids » Semiconductors

Appeared in Year: 2012

MCQ▾

Question

In a band structure calculation, the dispersion for electrons is found to be, εk=β(coskxa+cosky+coskza) Where β is a constant and a is the lattice constant. The effective mass at the boundary of the first Brillouin zone is – (December)

Choices

Choice (4) Response
a.

225βa2

b.

2βa2

c.

22βa2

d.

425βa2

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