WHICH OF THE FOLLOWING STATEMENTS BEST DESCRIBES A LASER

69. - DAP AN DE LUYEN THI DH TIENG ANH DAP AN DE LUYEN THI DH MON TIENG ANH NGAY 1142014
DAP AN DE LUYEN THI DH TIENG ANH DAP AN DE LUYEN THI DH MON TIENG ANH NGAY 1142014
69. Which of the following statements best describes a laser? A. A device for stimulating atoms and molecules to emit light. B. An atom in a high-energy state. C. A technique for destroying atoms or molecules. D. An instrument for measuring light waves.