Basic Science : Laser QUESTIONS AND ANSWERS :: part1 : 11 to 15
Following Basic Science multiple choice objective type questions and answers will help you in many types of 2024 job and other entrance examinations :
11.In a ruby laser, a large number of atoms occupy |
| ground state |
| excited state |
| metastable state |
| normal state |
More Laser QUESTIONS AND ANSWERS available in next pages
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