MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 11 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. |
Dispersive power of the material of the prism is 0.0221. If the deviation produced by it for yellow color is 38°, then the angular dispersion between red and violet color is? |
| A. | 0.84° |
| B. | 0.65° |
| C. | 0.48° |
| D. | 1.26° |
| Answer» B. 0.65° | |
| 2. |
Find the ratio of mean deviation produced, if the ratio of dispersive power of the material of two prism are 2:3 and ratio of angular dispersions produced by them is 1:2. |
| A. | 1:3 |
| B. | 4:3 |
| C. | 3:1 |
| D. | 3:4 |
| Answer» E. | |
| 3. |
A crown glass prism with refractive index 6° is to be achromatized for red and blue color light with flint glass prism. What will be the angle of flint glass prism? (µr = 1.513, µr‘ = 1.645, µ2 = 1.523 and µ2‘ = 1.665, Where µr and µ2 are refractive indices of red and blue light respectively whereas, µr‘ and µ2‘ are refractive indices of red and blue light respectively for flint glass.) |
| A. | 1.5° |
| B. | 2.4° |
| C. | 3° |
| D. | 4.5° |
| Answer» D. 4.5° | |
| 4. |
A thin prism P1 having angle 4° and refractive index 1.54 is combined with another thin prism P2 of refractive index 1.72 for producing dispersion without deviation. The angle of P2 is? |
| A. | 4° |
| B. | 5.33° |
| C. | 3° |
| D. | 2.6° |
| Answer» D. 2.6° | |
| 5. |
White light is passed through a prism having angle 5°. If the refractive indices for red color and blur color are 1.641 and 1.659 respectively. Find the angle between them. |
| A. | 3.295° |
| B. | 4° |
| C. | 0.090° |
| D. | 0.65° |
| Answer» D. 0.65° | |
| 6. |
If light travels in a medium of Refractive Index 1.4 through a distance 250 m in a given time interval, then how much distance will it cover in refractive index 1.75? |
| A. | 250 m |
| B. | 500 m |
| C. | 200 m |
| D. | 312.5 m |
| Answer» D. 312.5 m | |
| 7. |
If a monochromatic light goes through 2 cm of glass or 2.25 cm of water, the optical path is the same. If refractive index of glass is 1.50, then what is the refractive index of water? |
| A. | 1.33 |
| B. | 1.23 |
| C. | 1.50 |
| D. | 1.13 |
| Answer» B. 1.23 | |
| 8. |
What does first law of reflection state? |
| A. | The incident ray, reflected ray and normal ray, at the point of incidence, are in same plane |
| B. | The incident ray, reflected ray and normal ray, at the point of incidence, are perpendicular to each other |
| C. | The incident ray, reflected ray and normal ray at the point of incidence are in different plane |
| D. | mSin(i)=nSir(r) |
| Answer» B. The incident ray, reflected ray and normal ray, at the point of incidence, are perpendicular to each other | |
| 9. |
Name the person, who formed “The Principle of least time“? |
| A. | Pierre de Fermat |
| B. | C.V Raman |
| C. | John Kepler |
| D. | Albert Abraham Michelson |
| Answer» B. C.V Raman | |
| 10. |
What will be the time taken by a ray of light travelling from one point to another, by any number of refractions & reflections follows that particular path? |
| A. | Highest |
| B. | Least |
| C. | Maximum |
| D. | Moderate |
| Answer» C. Maximum | |
| 11. |
The product of the Geometric Length of the path light follows through the system, and the refractive index of the medium is known as __________ |
| A. | Fermat Path |
| B. | Optical Path |
| C. | Ray Path |
| D. | Optical Path Difference |
| Answer» C. Ray Path | |