# Solid State Physics Quiz for Fun & Quiz Competition Practice

Solid State Physics is about investigating the mysteries of Solids by quantum mechanics, crystallography, electromagnetism, metallurgy, etc make sure to play Quiz for better understanding.

## Results

### #5. The rotational symmetry in cubic crystals is also referred to as _________.

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Solid State Physics Quiz Explanation is given below

Why Physics is the king of all sciences or centre of science

1. For a face centred cubic crystal, total number of lattice points contained in a unit cell = (8 x 1/8) + (6 x 1/2) = 4.

2. Packing fraction for a body centred cubic crystal is 0.68. That means matter occupies 68 percent of space in body centred cubic crystal (bcc).

3. For a hexagonal crystal system, a = b ≠ c

Also, α = β = 900

γ = 1200

It has a one 6-fold rotation axis (characteristic symmetry element).

4. The number of associated lattice for an orthorhombic crystal lattice is 4 (P,C,F,I).

5. The 23 elements of symmetry in cubic crystals are classified into three kinds. They are: (i) Inversion symmetry

(ii) Rotational symmetry

(iii) Reflection symmetry

whereas rotational symmetry is also referred to as cylindrical symmetry.

Quiz and Explanation by Som Abhishek

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## Solid State Physics Quiz

1. What is the total number of lattice points contained in a unit cell of a face centred cubic crystal?

a. 2

b. 4()

c. 6

d. 8

2. How much percentage of space is occupied by matter in a body centred cubic crystal?

a. 68()

b. 47

c. 74

d. 52

3. Which of the following restriction on conventional cell is applied for a hexagonal crystal system?

a. a = b = c

b. a ≠ b = c

c. a = b  ≠ c ( )

d. a  ≠ b  ≠ c

4. How many associated lattices are there for an orthorhombic crystal system?

a. 2

b. 4()

c. 3

d. 1

5. The rotational symmetry in cubic crystals is also referred to as _________.

a. Inversion Symmetry

b. Cylindrical Symmetry ()

c. Reflection Symmetry

d. Linear Symmetry