GATE (Graduate Aptitude Test in Engineering) Physics: Questions 87 - 90 of 659

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Question number: 87

» Electronics » Bipolar Junction Transistors

Appeared in Year: 2015

Short Answer Question▾

Write in Short

In the simple current source shown in the figure, and are identical transistors with current gain and .

Current mirror circuit

Current Mirror Circuit

The circuit is shows the current mirror circuit consists of Q1 and Q2 are two identical transistors.

The current is ________ (upto two decimal places)

Question number: 88

» Mathematical Physics » Fourier Analysis

Appeared in Year: 2015

MCQ▾

Question

The Heaviside function is defined as,

And its Fourier transform is given by . The Fourier transform of, is –

Choices

Choice (4) Response

a.

b.

c.

d.

0

Question number: 89

» Classical Mechanics » Lagrange's and Hamilton's Formalisms

Appeared in Year: 2014

MCQ▾

Question

The Hamilton’s canonical equations of motion in terms of Poisson Brackets are –

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 90

» Quantum Mechanics » One, Two and Three-Dimensional Potential Problems

Appeared in Year: 2014

MCQ▾

Question

The ground state and the first excited state wave function of a one dimensional infinite potential well are and , respectively. When two spin – up electrons are placed in this potential, which one of the following with and denoting the position of the two electrons, correctly represents the space part of the ground state wave function of the system?

Choices

Choice (4) Response

a.

b.

c.

d.

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