# Solid State Physics-Diffraction Methods for Structure Determination (GATE (Graduate Aptitude Test in Engineering) Physics): Questions 1 - 4 of 11

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## Question number: 1

» Solid State Physics » Diffraction Methods for Structure Determination

Appeared in Year: 2014

### Write in Short

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

(Given: )

## Question number: 2

» Solid State Physics » Diffraction Methods for Structure Determination

Appeared in Year: 2012

MCQ▾

### Question

A simple cubic crystal with lattice parameter undergoes transition into a tetragonal structure with lattice parameters and , below a certain temperature. The ratio of the interplanar spacing of planes for the cubic and the tetragonal structures is –

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 3

» Solid State Physics » Diffraction Methods for Structure Determination

Appeared in Year: 2011

MCQ▾

### Question

For a three –dimensional crystal having N primitive unit cells with a basis of atoms, the number of optical branches is –

### Choices

Choice (4) Response

a.

b.

3

c.

d.

## Question number: 4

» Solid State Physics » Diffraction Methods for Structure Determination

Appeared in Year: 2013

MCQ▾

### Question

Two gases separated by an impermeable but movable partition are allowed to freely exchange energy. At equilibrium, the two sides will have the same –

### Choices

Choice (4) Response

a.

Pressure and volume

b.

Volume and energy

c.

Volume and temperature

d.

Pressure and temperature

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