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Metallic conduction 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 Metallic conduction with explanations for effective preparation. Practice of CUET PG Material Science and Technology PYQs including Metallic conduction questions regularly will improve accuracy, speed, and confidence in the CUET PG 2026 exam.
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CUET PG PYQs for Metallic conduction with Solutions
1.
Metallic sodium crystallizes in a BCC cubic form with a cube length of \(4.25 \times 10^{-10} \, \text{m}\). The concentration of conduction electrons is:- \(2.61 \times 10^{28} \, \text{m}^{-3}\)
- \(1.261 \times 10^{28} \, \text{m}^{-3}\)
- \(2.461 \times 10^{28} \, \text{m}^{-3}\)
- \(3.461 \times 10^{28} \, \text{m}^{-3}\)
2.
The electron and hole mobilities in a silicon sample are \(0.135 \, \text{m}^2/\text{V·s}\) and \(0.048 \, \text{m}^2/\text{V·s}\), respectively. If the intrinsic carrier concentration is \(1.5 \times 10^{16} \, \text{atoms/m}^3\), the conductivity at 300 K is:- \(\sigma = 4.39 \times 10^{-1} \, \text{S·m}^{-1}\)
- \(\sigma = 6.39 \times 10^{-1} \, \text{S·m}^{-1}\)
- \(\sigma = 7.39 \times 10^{-1} \, \text{S·m}^{-1}\)
- \(\sigma = 9.39 \times 10^{-1} \, \text{S·m}^{-1}\)
3.
The resistivity of copper metal is \(1.7 \times 10^{-8} \, \Omega \, \text{m}\) and the atomic density of copper is \(8.5 \times 10^{28} \, \text{atoms/m}^3\). The collision time \(\tau\) for electrons in copper is:- \(2.46 \times 10^{-14} \, \text{s}\)
- \(1.246 \times 10^{-14} \, \text{s}\)
- \(2.446 \times 10^{-14} \, \text{s}\)
- \(3.446 \times 10^{-14} \, \text{s}\)
4.
The Debye temperature $\Theta_D$ for Diamond is 1850K. The Debye frequency is:- $2.42 \times 10^{13}$ Hz
- $12.42 \times 10^{13}$ Hz
- $14.42 \times 10^{13}$ Hz
- $16.42 \times 10^{13}$ Hz
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