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ENTRANCE TEST – 2011 Multiple Questions and Answers.
| 16. | If 2 A current passes through a resistor when connected to a certain battery. If the resistance is replaced by the double resistance, then the current will become | ||
| A. | 2 A | ||
| B. | 4 A | ||
| C. | 6 A | ||
| D. | 1 A | ||
| 17. | In Helium-Neon laser, population inversion of _________ atoms is achieved which emit radiations, when they are stimulated to fall at lower level. | ||
| A. | Neon | ||
| B. | Helium | ||
| C. | Helium and Neon | ||
| D. | Chromium | ||
| 19. | Wavelength of X-rays is the order of: | ||
| A. | 10-6 m | ||
| B. | 10-10 m | ||
| C. | 10-13 m | ||
| D. | 100 m | ||
| 20. | Laser beam can be used to generate three-dimensional image of object in a process called: | ||
| A. | Computed technology | ||
| B. | Computed tomography | ||
| C. | Holography | ||
| D. | Computerized axial tomography | ||
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