MCQOPTIONS
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MCQOPTIONS
This section includes 9 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. |
If X-ray of wavelength 100 is incident on an atom at an angle of 90 , then what should be the value of d for first-order sepctrum? |
| A. | 30 |
| B. | 40 |
| C. | 50 |
| D. | 60 |
| Answer» D. 60 | |
| 2. |
If the angle of incidence is 30 , then the wavelength for first-order spectrum is equal to __________ |
| A. | d |
| B. | 2d |
| C. | d/2 |
| D. | d/3 |
| Answer» B. 2d | |
| 3. |
Bragg s law was proposed in __________ |
| A. | 1903 |
| B. | 1913 |
| C. | 1893 |
| D. | 1853 |
| Answer» C. 1893 | |
| 4. |
Bragg s law is a special case of Laue diffraction. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
The scattering of waves in Bragg s law experiment is due to __________ |
| A. | Einstein s scattering |
| B. | Rayleigh scattering |
| C. | Newton scattering |
| D. | Inelastic scattering |
| Answer» C. Newton scattering | |
| 6. |
When X-ray are incident on an atom, they make an electronic cloud move. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
Bragg s law is used in which process? |
| A. | X-ray production |
| B. | Gamma-ray production |
| C. | X-ray crystallography |
| D. | X-ray scan |
| Answer» D. X-ray scan | |
| 8. |
Peaks of scattered intensity is observed when the path difference would be equal to __________ |
| A. | |
| B. | /2 |
| C. | 3 /2 |
| D. | No peaks are observed at any condition |
| Answer» B. /2 | |
| 9. |
The correct expression for Bragg s law is n = ___________ |
| A. | dsin |
| B. | dcos |
| C. | 2dsin |
| D. | 2dcos |
| Answer» D. 2dcos | |