MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following is the curve for Fermi-Dirac statistics? |
| A. | X |
| B. | Y |
| C. | Z |
| D. | None |
| Answer» D. None | |
| 2. |
In Fermi-Dirac Statistics, one energy state can be occupied by more than one particle. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
The average energy of one electron silver is 3.306 eV. What is the fermi-energy of Silver at 0 K? |
| A. | 2.32 eV |
| B. | 3.78 eV |
| C. | 4.12 eV |
| D. | 5.51 eV |
| Answer» E. | |
| 4. |
The Fermi energy of a material is 3.45 eV. What is the zero-point energy of the material? |
| A. | 1.02 eV |
| B. | 2.07 eV |
| C. | 3.45 eV |
| D. | 4.16 eV |
| Answer» C. 3.45 eV | |
| 5. |
The density of silver is 10.5 g/cm3 and its atomic weight is 108. If each atom contributes one electron for conduction, what is the fermi energy? |
| A. | 2.12 eV |
| B. | 3.31 eV |
| C. | 4.69 eV |
| D. | 5.51 eV |
| Answer» E. | |
| 6. |
What is the relationship between T1 and T2? |
| A. | T1 > T2 |
| B. | T1 < T2 |
| C. | T1 = T2 |
| D. | Insufficient Information |
| Answer» C. T1 = T2 | |
| 7. |
For all the quantum states with energy greater than Fermi energy to be empty in a Fermi-Dirac system, the temperature should be ______ |
| A. | 273 K |
| B. | 373 K |
| C. | 0 K |
| D. | 100 K |
| Answer» D. 100 K | |
| 8. |
The expression for mean energy is given by ________ |
| A. | \(\frac{3}{5}NE_F\) |
| B. | \(\frac{2}{5}NE_F\) |
| C. | \(\frac{3}{5}E_F\) |
| D. | \(\frac{2}{5}E_F\) |
| Answer» B. \(\frac{2}{5}NE_F\) | |
| 9. |
At T > 0K, the probability of a state with E > EF filled is zero. |
| A. | True |
| B. | False |
| Answer» C. | |
| 10. |
The distribution function is given by ________ |
| A. | \(\frac{1}{Ae\frac{E}{nT}+1}\) |
| B. | \(\frac{1}{Ae\frac{E}{nT}-1}\) |
| C. | \(\frac{1}{e\frac{E}{nT}+A}\) |
| D. | \(\frac{1}{e\frac{E}{nT}-A}\) |
| Answer» B. \(\frac{1}{Ae\frac{E}{nT}-1}\) | |
| 11. |
Fermi-Dirac statistics cannot be applied to ________ |
| A. | Electrons |
| B. | Photons |
| C. | Fermions |
| D. | Protons |
| Answer» C. Fermions | |
| 12. |
The wave function of fermions is not _________ |
| A. | Continuous |
| B. | Single Valued |
| C. | Symmetric |
| D. | Differentiable |
| Answer» D. Differentiable | |
| 13. |
The Maxwell-Boltzmann law is given by the expression ni = ________ |
| A. | \(\frac{g}{e^{\alpha+\beta E}} \) |
| B. | \(\frac{g}{e^{\alpha+\beta E}-1} \) |
| C. | \(\frac{g}{e^{\alpha+\beta E}+1} \) |
| D. | \(\frac{g}{e^{\alpha+\beta E}+k} \) |
| Answer» D. \(\frac{g}{e^{\alpha+\beta E}+k} \) | |
| 14. |
The difference between fermions and bosons is that bosons do not obey ______ |
| A. | Aufbau principle |
| B. | Pauli’s Exclusion Principle |
| C. | Hund’s Rule of Maximum Multiplicity |
| D. | Heisenberg’s Uncertainty Principle |
| Answer» C. Hund’s Rule of Maximum Multiplicity | |
| 15. |
Fermi-Dirac statistics is for the ________ |
| A. | Distinguishable particles |
| B. | Symmetrical Particles |
| C. | Particles with half integral spin |
| D. | Particles with integral spin |
| Answer» D. Particles with integral spin | |