MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Metrology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following option is correct about wavelength standard? |
| A. | Wavelength does not depend upon the amount of isotope impurity |
| B. | Solid state lasers having high intrinsic noise can be used to study new lines |
| C. | Krypton 86 is produced by neutron bombardment of gold |
| D. | Cadmium 114 is the secondary international length standard |
| Answer» E. | |
| 2. |
Which of the following option is correct for the given statements?Statement 1: End and wavelength standards can be compared without any mechanical movement.Statement 2: Indirect comparison of line standard and wavelength standard involves movement. |
| A. | Only statement 1 is true |
| B. | Only statement 2 is true |
| C. | Both the statements are true |
| D. | Both the statements are not true |
| Answer» D. Both the statements are not true | |
| 3. |
Which of the following option is correct for given statements about wavelength standard?Statement 1: Gas lasers produce 1000 times more intense light than others.Statement 2: Lasers cannot be used for some interferometers like Pitter-NPL gauge interferometer. |
| A. | T, F |
| B. | F, T |
| C. | F, F |
| D. | T, T |
| Answer» E. | |
| 4. |
WHICH_OF_THE_FOLLOWING_OPTION_IS_CORRECT_ABOUT_WAVELENGTH_STANDARD??$ |
| A. | Wavelength does not depend upon the amount of isotope impurity |
| B. | Solid state lasers having high intrinsic noise can be used to study new lines |
| C. | Krypton 86 is produced by neutron bombardment of gold |
| D. | Cadmium 114 is the secondary international length standard |
| Answer» E. | |
| 5. |
What is the path difference between interference fringes, when krypton 86 is used? |
| A. | 500 mm |
| B. | 800 mm |
| C. | 1000 mm |
| D. | 1200 mm |
| Answer» C. 1000 mm | |
| 6. |
Which of the following is not an advantage of gas laser? |
| A. | Bigger size |
| B. | Highly monochromatic light |
| C. | Produce intense light |
| D. | Enormous path difference between interference fringes |
| Answer» B. Highly monochromatic light | |
| 7. |
Which colour radiation of krypton 86 is selected for measurement? |
| A. | Yellow |
| B. | Green |
| C. | Orange |
| D. | Blue |
| Answer» D. Blue | |
| 8. |
Which of the following is the most suitable for wavelength standard? |
| A. | Cadmium 114 |
| B. | Krypton 86 |
| C. | Mercury 198 |
| D. | Any monochromatic light |
| Answer» C. Mercury 198 | |
| 9. |
What is the error in a reproduction of wavelength standard? |
| A. | 1 part in 100 million |
| B. | 2 parts in 50 million |
| C. | 2 parts in 50 million |
| D. | 1 part in 50 million |
| Answer» B. 2 parts in 50 million | |
| 10. |
Which of the following is not correct about wavelength standard? |
| A. | Wavelength of monochromatic light is an invariable unit of length |
| B. | Wavelength standard is a physical standard |
| C. | It is a reproducible standard |
| D. | It is a natural unit of length |
| Answer» C. It is a reproducible standard | |