GATE (Graduate Aptitude Test in Engineering) Physics: Questions 121 - 126 of 659

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Question number: 121

» Mathematical Physics » Elements of Complex Analysis » Cauchy-Riemann Conditions

Appeared in Year: 2012

MCQ▾

Question

The number of independent component of the symmetric with indices is –

Choices

Choice (4) Response

a.

6

b.

3

c.

1

d.

9

Passage

The dispersion relation for a one – dimensional monatomic crystal with lattice spacing a, which interacts via nearest neighbor harmonic potential is given by, , where is a constant of appropriate unit.

Question number: 122 (1 of 2 Based on Passage) Show Passage

» Solid State Physics » Elements of Crystallography

Appeared in Year: 2012

MCQ▾

Question

The force constant between the nearest neighbors of the lattice is –

(M is the mass of the atom)

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 123 (2 of 2 Based on Passage) Show Passage

» Solid State Physics » Elements of Crystallography

Appeared in Year: 2012

MCQ▾

Question

The group velocity at the boundary of the first Brillouin zone is –

Choices

Choice (4) Response

a.

b.

1

c.

d.

0

Question number: 124

» Electromagnetic Theory » Solutions of Electrostatic and Magnetostatic Problems

Appeared in Year: 2012

MCQ▾

Question

Given , where is a constant vector and is the position vector. The value of , where is a circle of unit radius centered at origin is,

Choices

Choice (4) Response

a.

1

b.

c.

d.

0

Question number: 125

» Electronics » Network Analysis

Appeared in Year: 2012

MCQ▾

Question

In the following circuit, the voltage drop across the ideal diode in forward bias condition is .

Circuit diagram of three resistors and a diode

Circuit Diagram of Three Resistors and a Diode

In figure a circuit diagram consists of three resistors and a diode, is shown.

The current passing through the diode is –

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 126

» Thermodynamics and Statistical Physics » Partition Function

Appeared in Year: 2012

MCQ▾

Question

Consider a system whose three energy levels are given by . The energy level is two – fold degenerate and the other two are non – degenerate. The partition function of the system with is given by –

Choices

Choice (4) Response

a.

b.

c.

d.

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