CSIR Physical Sciences: Questions 312 - 314 of 401

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Question number: 312

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

Appeared in Year: 2012

MCQ▾

Question

Charges Q, Q and -2Q are placed on the vertices of an equilateral triangle ABC of sides of length Equation , as shown in the figure

Three charges at the vertices of triangle

Three Charges at the Vertices of Triangle

In figure charges Q, Q and – 2Q are placed on the vertices of an equilateral triangle ABC of sides of length a.

The dipole moment of this configuration of charges, irrespective of the choice of origin, is – (June)

Choices

Choice (4) Response

a.

Equation

b.

0

c.

Equation

d.

Equation

Question number: 313

» Quantum Mechanics » Wave-Function in Coordinate Representations

Appeared in Year: 2012

MCQ▾

Question

The energy in the ground state and first excited state of a particle of mass Equation in a potential Equation are Equation and Equation , respectively, (in units in which Equation ). If the corresponding wave functions are related by Equation , then the ground state eigen function is – (December)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 314

» Electromagnetic Theory » Scalar and Vector Potentials

Appeared in Year: 2012

MCQ▾

Question

Consider an infinite conducting sheet in the XY – plane with a time dependent current density Equation , where K is constant. The vector potential at Equation is given by Equation . The magnetic field Equation is –

(December)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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