CSIR Physical Sciences: Questions 68 - 71 of 401

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Question number: 68

» Thermodynamic and Statistical Physics » Micro- and Macro-States

Appeared in Year: 2012

MCQ▾

Question

Consider a system of non – interacting particle in d dimensions obeying the dispersion relation Equation where Equation is the energy, k is wavevector, s is an integer and A a constant. The density of states, Equation is proportional to – (June)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 69

» Quantum Mechanics » Spin-Statistics Connection

Appeared in Year: 2013

MCQ▾

Question

A spin Equation particle is in the state Equation in the eigen basis Equation and Equation . If we measure Equation , the probabilities of getting Equation and Equation , respectively, are (December)

Choices

Choice (4) Response

a.

0 and 1

b.

Equation

c.

Equation

d.

Equation

Question number: 70

» Electronics and Experimental Methods » Operational Amplifiers

Appeared in Year: 2014

MCQ▾

Question

An op-amp based voltage follower – (June)

Choices

Choice (4) Response

a.

Is useful for converting a high impedance source into a low impedance source

b.

Has infinitely high closed loop gain.

c.

Is useful for converting a low impedance source into a high impedance source.

d.

Has infinitely high closed loop output impedance.

Question number: 71

» Electromagnetic Theory » Electrostatics: Gauss's Law and Its Applications

Appeared in Year: 2014

MCQ▾

Question

Consider an electromagnetic wave at the interface between two homogeneous dielectric media of dielectric constant Equation and Equation . Assuming Equation and no charge on the surface, the electric field vector Equation and the displacement vector Equation in the two media satisfy the following inequalities – (June)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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