Energy Bands -Multiple Choice Questions Quiz

Interactive MCQs on “Energy Bands”:

Solve the following 10 questions. Only one option is correct. Click on the “Submit” button when done. Click on the “embed” button to use this quiz on your website. Click on “WhatsApp” to share this quiz.

Question 1: What are energy bands in the context of solid-state physics?

(a) Bands of light energy emitted by solids
(b) Bands of energy levels available to electrons in a solid
(c) Bands of energy formed during nuclear fusion
(d) Bands of energy associated with the motion of atoms in a solid

Question 2: Which of the following statements about energy bands is correct?

(a) Energy bands represent individual energy levels for electrons.
(b) In a solid, electrons can have any energy value within a band.
(c) Energy bands in a solid are continuous and without gaps.
(d) The number of energy bands in a solid is fixed and universal.

Question 3: What is the highest energy band that contains electrons at absolute zero temperature in a solid?

(a) Valence band
(b) Conduction band
(c) Forbidden band
(d) Fermi level

Question 4: Which of the following bands in a solid allows electrons to move freely and conduct electricity?

(a) Valence band
(b) Conduction band
(c) Forbidden band
(d) Fermi level

Question 5: What is the term for the energy gap between the valence band and the conduction band in a solid?

(a) Band gap
(b) Fermi level
(c) Forbidden gap
(d) Energy barrier

Question 6: Which type of material has a completely filled valence band and an empty conduction band at absolute zero temperature?

(a) Insulator
(b) Semiconductor
(c) Metal
(d) Superconductor

Question 7: What is the Fermi level in a solid?

(a) The highest energy level in the conduction band
(b) The lowest energy level in the valence band
(c) The energy level separating the valence band from the conduction band at absolute zero temperature
(d) The energy level at which electrons have the highest probability of being found

Question 8: In a semiconductor, what happens to the energy band gap with increasing temperature?

(a) The band gap increases.
(b) The band gap decreases.
(c) The band gap remains constant.
(d) The band gap fluctuates randomly.

Question 9: What is the name for the state when the valence band and conduction band in a solid overlap, allowing electrons to move freely?

(a) Band gap state
(b) Forbidden state
(c) Semiconductor state
(d) Overlapping state

Question 10: What happens to the electrical conductivity of a metal as the temperature is increased?

(a) It decreases.
(b) It increases.
(c) It remains constant.
(d) It becomes zero.