Basic Science : De Broglie Waves QUESTIONS AND ANSWERS :: part1 : 6 to 10
Following Basic Science multiple choice objective type questions and answers will help you in many types of 2024 job and other entrance examinations :
6.The wave associated with a moving particle is called |
| longitudinal wave |
| mechanical wave |
| de Broglie wave |
| Planck’s wave |
7.The momentum of an electron, if its wavelength is 2Å, is |
| 2.3 10-24 kg ms-1 |
| 3.315 10-24 kg ms-1 |
| 1.3 10-24 kg ms-1 |
| 13 10-24 kg ms-1 |
8.The de Broglie wavelength associated with an electron moving with a speed of 107m/s |
| 0.728 Å |
| 7.28 Å |
| 72.8 Å |
| 728 Å |
9.The focal length of magnetic lens used in an electron microscope depends on |
| the velocity of electrons |
| the magnitude of current passing through energizing coils |
| the medium in between energizing coils |
| all the above |
10.In electron microscope, the electron beam is focused by varying the |
| wavelength of electron |
| current through the emerging coil |
| velocity of electron |
| thickness of colloidal film |
More De Broglie Waves QUESTIONS AND ANSWERS available in next pages
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