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In a ruby laser, the laser action is achieved by __________ method
Electrical pumping
Optical pumping
Direct conversion
atom to atom collision
Optical pumping
Quick Summary: Practice and solve "In a ruby laser, the laser action is achieved by __________ method..." for Electrical - Electrical Materials. The correct answer is Option B: Optical pumping. Detailed step-by-step solution, conceptual clarity, and formulas on Examoogle.
Answer:
Option **(b) **