MCQOPTIONS
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MCQOPTIONS
This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Crystalline solids are which of the following? |
| A. | Anisotropic |
| B. | Isotropic |
| C. | Amorphous |
| D. | Unipotential |
| Answer» B. Isotropic | |
| 2. |
Which of the following is true regarding insulators? |
| A. | The valence band is partially filled with electrons |
| B. | The conduction band is partially filled with electrons |
| C. | The conduction band is filled with electrons and valence band empty |
| D. | The conduction band is empty and valence band is filled with electrons |
| Answer» B. The conduction band is partially filled with electrons | |
| 3. |
At absolute zero temperature, a semiconductor acts as a conductor. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
In semiconductors at room temperature, which of the following is likely to happen? |
| A. | The valence band is partially empty and the conduction band is partially filled |
| B. | The valence band is filled and the conduction band is partially filled |
| C. | The valence band is filled |
| D. | The conduction band is empty |
| Answer» B. The valence band is filled and the conduction band is partially filled | |
| 5. |
A piece of copper and another of germanium are cooled from room temperature to 77 K. what will impact on the resistance of each of them? |
| A. | Each of these decreases |
| B. | Copper strip increases and that of germanium decreases |
| C. | Copper strip decreases and that of germanium increases |
| D. | Each of these increases |
| Answer» D. Each of these increases | |
| 6. |
The energy band gap is maximum in which of the following? |
| A. | Metals |
| B. | Superconductors |
| C. | Insulators |
| D. | Semiconductors |
| Answer» D. Semiconductors | |
| 7. |
The manifestation of the band structure in solids is due to which of the following? |
| A. | Heisenberg s uncertainty principle |
| B. | Pauli s exclusion principle |
| C. | Bohr s correspondence principle |
| D. | Boltzmann s law |
| Answer» C. Bohr s correspondence principle | |