MCQOPTIONS
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MCQOPTIONS
This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
When is the wave interference strong? |
| A. | When the paths taken by all of the interfering waves are greater than the coherence length |
| B. | When the paths taken by all of the interfering waves are lesser than the coherence length |
| C. | When the paths taken by all of the interfering waves are equal than the coherence length |
| D. | When the paths taken by all of the interfering waves are independent of the coherence length |
| Answer» C. When the paths taken by all of the interfering waves are equal than the coherence length | |
| 2. |
Which of the following is the formula for calculating coherence time? |
| A. | <sub>c</sub> = ( frac { lambda^3}{(c Delta lambda)} ) |
| B. | <sub>c</sub> = ( frac { lambda}{(c Delta lambda)} ) |
| C. | <sub>c</sub> = ( frac { lambda^2}{(c Delta lambda)} ) |
| D. | <sub>c</sub> = ( frac { lambda^2}{(c Delta lambda)} ) |
| Answer» E. | |
| 3. |
Identify the factor is not the same for coherent waves. |
| A. | Frequency |
| B. | Phase difference constant |
| C. | Amplitude |
| D. | Wavelength in phase with each other |
| Answer» D. Wavelength in phase with each other | |
| 4. |
Scattering of waves can be coherent and incoherent. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
Which among the following is an example of coherent sources? |
| A. | Fluorescent tubes |
| B. | LED light |
| C. | LASER |
| D. | Tungsten filament lamps |
| Answer» D. Tungsten filament lamps | |
| 6. |
Which of the following is a form of light whose photons share the same frequency and whose wavelengths are in phase with one another? |
| A. | Coherent sources |
| B. | Incoherent sources |
| C. | Electromagnetic waves |
| D. | Sunlight |
| Answer» B. Incoherent sources | |