MCQOPTIONS
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MCQOPTIONS
This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Physics Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The speed of yellow light in a certain liquid is 2.4 × 108 m/s. Find the refractive index of the liquid. |
| A. | 1.25 |
| B. | 5.55 |
| C. | 6.25 |
| D. | 12.25 |
| Answer» B. 5.55 | |
| 2. |
The speed of light in air is 3 × 108 m/s. If the refractive index of glass is 1.5, find the time taken by light to travel a distance of 10 cm in the glass. |
| A. | 0.5 × 10-10 s |
| B. | 5 × 10-10 s |
| C. | 50 × 10-10 s |
| D. | 500 × 10-10 s |
| Answer» C. 50 × 10-10 s | |
| 3. |
In Huygens’ theory, light waves are longitudinal and do not require a material medium for their propagation. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
The refractive index of glass is 1.5 and that of water is 1.3, the speed of light in water is 2.25 × 108 m/s. What is the speed of light in glass? |
| A. | 7.95 × 108 m/s |
| B. | 9.95 × 108 m/s |
| C. | 1.95 × 108 m/s |
| D. | 3.95 × 108 m/s |
| Answer» D. 3.95 × 108 m/s | |
| 5. |
The absolute refractive indices of glass and water are \(\frac {3}{2}\) and \(\frac {4}{3}\). Determine the ratio of the speeds of light in glass and water. |
| A. | 5:7 |
| B. | 9:8 |
| C. | 7:5 |
| D. | 8:9 |
| Answer» E. | |
| 6. |
Which among the following isn’t a suitable phenomenon to establish that light is wave motion? |
| A. | Interference |
| B. | Diffraction |
| C. | Reflection |
| D. | Polarization |
| Answer» D. Polarization | |