MCQOPTIONS
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MCQOPTIONS
This section includes 8 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. |
In Fresnel diffraction, the relative phase difference between the curved wavefront is ________ |
| A. | Constant |
| B. | Zero |
| C. | Linearly increasing |
| D. | Non=constant |
| Answer» E. | |
| 2. |
Light of 4000 is incident on a circular hole of radius 3 cm. How many half-period zones are contained in the circle if the screen is placed at a distance of 0.5 m? |
| A. | 25 |
| B. | 250 |
| C. | 2500 |
| D. | 25000 |
| Answer» E. | |
| 3. |
The surface of calculation for Fraunhofer and Fresnel diffraction patterns are respectively __________ |
| A. | Flat and Flat |
| B. | Spherical and Flat |
| C. | Flat and Spherical |
| D. | Spherical and Spherical |
| Answer» C. Flat and Spherical | |
| 4. |
The diffraction pattern changes downstream in Fresnel Diffraction. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
What is the variation in the pattern observed for single slit Fresnel diffraction than single slit Fraunhofer Diffraction? |
| A. | The pattern is not hyperbolic |
| B. | The fringes are too thin |
| C. | The region of minimum intensity is not completely dark |
| D. | The fringes are colored |
| Answer» D. The fringes are colored | |
| 6. |
The diffraction patterns obtained in Fresnel and Fraunhofer Diffraction are fixed in position. |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
The incident wavefronts in Fresnel and Fraunhofer Diffraction are respectively _________ |
| A. | Planar and Planar |
| B. | Planar and cylindrical |
| C. | Cylindrical and Planar |
| D. | Cylindrical and Cylindrical |
| Answer» D. Cylindrical and Cylindrical | |
| 8. |
In x lenses are used in Fraunhofer diffraction and y in Fresnel Diffraction, x y is ________ |
| A. | 0 |
| B. | 1 |
| C. | 2 |
| D. | 3 |
| Answer» D. 3 | |