Condensed Matter Physics (CSIR (Council of Scientific & Industrial Research) Physical Sciences): Questions 1 - 3 of 19

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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 » Free Electron Theory

Appeared in Year: 2014

MCQ▾

Question

The dispersion relation for electron in an f. c. c. crystal is given, in the tight binding approximation, by Equation ; where a is the lattice constant and Equation is a constant with the dimension of energy. The x – component of the velocity of the electrons at Equation is – (June – 2014)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 3

» Condensed Matter Physics » Free Electron Theory

Appeared in Year: 2014

MCQ▾

Question

Consider an electron in a b. c. c. lattice with lattice constant Equation . A single particle wavefunction that satisfies the Bloch theorem will have the form Equation , with Equation being – (June – 2014)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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