GATE Physics: Questions 85 - 88 of 622

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Question number: 85

» Solid State Physics » Diffraction Methods for Structure Determination

Appeared in Year: 2014

Short Answer Question▾

Write in Short

Neutrons moving with speed Equation are used for the determination of crystal structure. If the Bragg angle for the first order diffraction is Equation , the interplanar spacing of the crystal is Equation .

(Given: Equation )

Question number: 86

» Electromagnetic Theory » Interference

Appeared in Year: 2014

MCQ▾

Question

In an interference pattern formed by two coherent sources, the maximum and the minimum of the intensities are Equation and Equation , respectively. The intensities of the individual waves are –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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, Equation and Equation are identical transistors with current gain Equation and Equation .

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 Equation is ________ (upto two decimal places)

Question number: 88

» Mathematical Physics » Fourier Analysis

Appeared in Year: 2015

MCQ▾

Question

The Heaviside function is defined as,

Equation

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

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

0

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