CUET PG PYQs for Energy bands with Solutions: Practice CUET PG Previous Year Questions

Content Writer | Journalism Graduate | Updated on - Dec 17, 2025

Energy bands is an important topic in the Material Science and Technology section in CUET PG exam. Practising this topic will increase your score overall and make your conceptual grip on CUET PG exam stronger.

This article gives you a full set of CUET PG PYQs for Energy bands with explanations for effective preparation. Practice of CUET PG Material Science and Technology PYQs including Energy bands questions regularly will improve accuracy, speed, and confidence in the CUET PG 2026 exam.

CUET PG PYQs for Energy bands with Solutions

1.
The ratio of charge carrier densities in a pure silicon crystal at \(27^\circ \text{C}\) and \(57^\circ \text{C}\) is 1.25. The energy gap of the semiconductor is:
- \(E_g = 1.11 \, \text{eV}\)
- \(E_g = 2.15 \, \text{eV}\)
- \(E_g = 6.1 \, \text{eV}\)
- \(E_g = 7.1 \, \text{eV}\)
View Solution
2.
The energy gap between the top of the valence band and bottom of the conduction band is called the energy band gap \((E_g)\). Depending upon the materials, the gap can be:
- Positive
- Negative
- Zero
- Positive,Negative,Zero
View Solution
3.
A semiconductor has acceptor levels \(57 \, \text{meV}\) above the valence band. The maximum wavelength of light which can excite an electron is:
- \(2.18 \times 10^{-4} \, \text{m}\)
- \(4.18 \times 10^{-4} \, \text{m}\)
- \(6.18 \times 10^{-4} \, \text{m}\)
- \(8.18 \times 10^{-4} \, \text{m}\)
View Solution
4.
The energy of a photon of sodium light (\(\lambda = 589 \, \text{nm}\)) is equal to the band gap of a semiconducting material. The minimum energy required to create a hole-electron pair is:
- \(2.1 \, \text{eV}\)
- \(1.1 \, \text{eV}\)
- \(6.1 \, \text{eV}\)
- \(3.1 \, \text{eV}\)
View Solution

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CUET PG PYQs for Energy bands with Solutions: Practice CUET PG Previous Year Questions

CUET PG PYQs for Energy bands with Solutions

1.
The ratio of charge carrier densities in a pure silicon crystal at \(27^\circ \text{C}\) and \(57^\circ \text{C}\) is 1.25. The energy gap of the semiconductor is:

2.
The energy gap between the top of the valence band and bottom of the conduction band is called the energy band gap \((E_g)\). Depending upon the materials, the gap can be:

3.
A semiconductor has acceptor levels \(57 \, \text{meV}\) above the valence band. The maximum wavelength of light which can excite an electron is:

4.
The energy of a photon of sodium light (\(\lambda = 589 \, \text{nm}\)) is equal to the band gap of a semiconducting material. The minimum energy required to create a hole-electron pair is:

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CUET PG PYQs for Energy bands with Solutions

1.The ratio of charge carrier densities in a pure silicon crystal at \(27^\circ \text{C}\) and \(57^\circ \text{C}\) is 1.25. The energy gap of the semiconductor is:

2.The energy gap between the top of the valence band and bottom of the conduction band is called the energy band gap \((E_g)\). Depending upon the materials, the gap can be:

3.A semiconductor has acceptor levels \(57 \, \text{meV}\) above the valence band. The maximum wavelength of light which can excite an electron is:

4.The energy of a photon of sodium light (\(\lambda = 589 \, \text{nm}\)) is equal to the band gap of a semiconducting material. The minimum energy required to create a hole-electron pair is:

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1.
The ratio of charge carrier densities in a pure silicon crystal at \(27^\circ \text{C}\) and \(57^\circ \text{C}\) is 1.25. The energy gap of the semiconductor is:

2.
The energy gap between the top of the valence band and bottom of the conduction band is called the energy band gap \((E_g)\). Depending upon the materials, the gap can be:

3.
A semiconductor has acceptor levels \(57 \, \text{meV}\) above the valence band. The maximum wavelength of light which can excite an electron is:

4.
The energy of a photon of sodium light (\(\lambda = 589 \, \text{nm}\)) is equal to the band gap of a semiconducting material. The minimum energy required to create a hole-electron pair is: