CSIR (Council of Scientific & Industrial Research) Physical Sciences: Questions 269 - 271 of 463

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Question number: 269

» Condensed Matter Physics » Superfluidity

Appeared in Year: 2014

MCQ▾

Question

The following data is obtained in an experiment that measures the viscosity as a function of molecular weight M for a set of polymers.

List of data obtained to measure viscosity

In table, the list of data is obtained in an experiment to measure the viscosity is given.

The relation that best describes the dependence of on M is – (June – 2014)

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 270

» Quantum Mechanics » Wave-Function in Momentum Representations

Appeared in Year: 2013

MCQ▾

Question

If denotes the eigenfunction of the Hamiltonian with a potential , then the expectation value of the operator and in the state is – (June – 2013)

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 271

» Condensed Matter Physics » Drude Model of Electrical and Thermal Conductivity

Appeared in Year: 2013

MCQ▾

Question

Using the frequency dependent Drude formula, what is the effective kinetic inductance of a metallic wire that is to be used as a transmission line? [In the following, the electron mass is , density of electrons is , and the length and cross – sectional area of the wire are and A respectively. ] (June)

Choices

Choice (4) Response

a.

b.

Zero

c.

d.

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