# Solid State Physics Quiz for Fun & Quiz Competition Practice 2

Solid state Physics Quiz 2nd Part is here. So let me tell you first Definition, 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. For a metal the electron density is 6.4 x 1028 m-3. The Fermi energy is ______eV.

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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. There are three kinds of the axis of symmetry.
There is nothing like the pentad axis of symmetry.
2. Intercepts are 2a, 3b, 6c. Dividing these
intercepts by their unit translations, we get 2, 3,
6 respectively. Taking their reciprocals, it looks
like 1/2, 1/3, 1/6.
In the end, after clearing fraction(by multiplying
to each the LCM of the three fractions), we get
the Miller indices (3 2 1).
3. The impurity levels will be close to the bottom
of the conduction band.

5. Fermi energy, EF= [h2(3π2 n)2/3]/8π2m

Now putting all the values, we’ll get 5.84 eV.

Quiz and Explanation By : Som Abhisek.

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Solid State Physics Quiz

1. Which of the following doesn’t belong to the kinds of axis of symmetry?

2. What are the Miller indices for a plane that cuts intercepts of 2a, 3b, 6c along the three crystallographic axes?

a. (2 3 6)

b. (3 4 7)

c. (1 1 1)

d. (3 2 1)  ()

3. If a semiconductor is doped with donor atoms then the impurity levels created in the semiconductor are close to the  ________.

a. bottom of the conduction band()

b. top of the valence band

c. bottom of the valence band

d. top of the conduction band

4. The X-ray diffraction pattern of a material contains only reflections with all-evn or all-odd Miller indices. Then the crystal structure will be _______.

a. face centred cubic()

b. simple cubic

c. hexagonal

d. body centred cubic

5. For a metal the electron density is 6.4 x 1028 m-3. The Fermi energy is ______eV.

a. 6.84

b. 5.84()

c. 8.84

d. 0