MCQOPTIONS
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MCQOPTIONS
This section includes 10 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 which region of the electromagnetic spectrum, does the semiconductor laser lies? |
| A. | Visible Region |
| B. | UV Region |
| C. | Microwave Region |
| D. | Infrared Region |
| Answer» E. | |
| 2. |
Where is ND: YAG most commonly used? |
| A. | Cosmetic Surgery |
| B. | Welding |
| C. | Photography |
| D. | Optical Communications |
| Answer» B. Welding | |
| 3. |
Semiconductors lasers do not need mirrors to form optical cavity. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
The active medium of a semiconductor diode is the junction of the forward biased P-N diode. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
The highest powered CO2 laser had a power of _________ |
| A. | 1 W |
| B. | 10 W |
| C. | 1000 W |
| D. | 10000 W |
| Answer» D. 10000 W | |
| 6. |
Which of the following gas is not a part of the active medium in a CO2 laser? |
| A. | CO<sub>2</sub> |
| B. | N<sub>2</sub> |
| C. | He |
| D. | O<sub>2</sub> |
| Answer» E. | |
| 7. |
Which of the following is a four-level laser? |
| A. | ND: YAG |
| B. | Ruby |
| C. | Argon laser |
| D. | CO<sub>2</sub> laser |
| Answer» D. CO<sub>2</sub> laser | |
| 8. |
In the CO2 molecular gas laser, transition takes place between the ______________ |
| A. | Molecular states |
| B. | Atomic states |
| C. | Vibrational states |
| D. | Energy states |
| Answer» D. Energy states | |
| 9. |
Which of the following is a characteristic of semiconductor lasers? |
| A. | Output in Visible region |
| B. | High Efficiency |
| C. | Output in UV region |
| D. | Pulsed output |
| Answer» C. Output in UV region | |
| 10. |
What is the wavelength of the emitted laser by a carbon dioxide? |
| A. | 9.4 m |
| B. | 10.6 m |
| C. | 11.4 m |
| D. | 12.5 m |
| Answer» C. 11.4 m | |