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. |
Unpolarized light is incident on a plane glass surface. What should be the angle of incidence such that the reflect and refracted rays are perpendicular to each other? |
| A. | 90 |
| B. | 45 |
| C. | 57 |
| D. | 60 |
| Answer» D. 60 | |
| 2. |
A tube of length 20cm containing a 10% sugar solution rotates the plane of polarization by 13.2 . What is the specific rotation of sugar solution? |
| A. | 66 |
| B. | 55 |
| C. | 44 |
| D. | 33 |
| Answer» B. 55 | |
| 3. |
What should be the thickness of quarter-wave plate for a light of wavelength 5000 if e = 1.553 and o = 1.544? |
| A. | 1.38 X 10<sup>-3</sup> cm |
| B. | 1.43 X 10<sup>-3</sup>cm |
| C. | 1.53 X 10<sup>-3</sup>cm |
| D. | 1.63 X 10<sup>-3</sup> cm |
| Answer» B. 1.43 X 10<sup>-3</sup>cm | |
| 4. |
An electromagnetic beam has an intensity 16 W/m2 and is linearly polarized vertically. What is the intensity of the transmitted beam, if the angle of incidence on the polaroid is 45 with the vertical? |
| A. | 8 Wm<sup>-1</sup> |
| B. | 12 Wm<sup>-1</sup> |
| C. | 16 Wm<sup>-1</sup> |
| D. | 20 Wm<sup>-1</sup> |
| Answer» B. 12 Wm<sup>-1</sup> | |
| 5. |
The velocity of light in water is 1.5 X 108 m/s. What is the polarizing angle of incidence? |
| A. | 47.23 |
| B. | 51.02 |
| C. | 53.74 |
| D. | 63.43 |
| Answer» E. | |
| 6. |
If the phase difference between two rays is /2 and the angle of incidence is equal to /4, the emergent light is __________ |
| A. | Linearly Polarized |
| B. | Elliptically Polarized |
| C. | Circularly Polarized |
| D. | Non-Polarized |
| Answer» D. Non-Polarized | |
| 7. |
A window which can transmit all the incident light without any reflection is called as ___________ |
| A. | Polarized Window |
| B. | Malus Window |
| C. | Brewster Window |
| D. | Non-reflecting window |
| Answer» D. Non-reflecting window | |
| 8. |
The direction in which the electric vectors oscillate in a polarized wave is called as _______ |
| A. | Polarizing axis |
| B. | Plane of polarization |
| C. | Pass axis |
| D. | Propagating axis |
| Answer» D. Propagating axis | |
| 9. |
A linearly polarized wabe is always __________ |
| A. | In x-y plane |
| B. | A Transverse wave |
| C. | A Longitudinal wave |
| D. | In y-z plane |
| Answer» C. A Longitudinal wave | |