International Day of Light is observed every year on _________ to mark the anniversary of the first successful operation of the laser in 1960 by physicist and engineer, Theodore Maiman.
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Q:
International Day of Light is observed every year on _________ to mark the anniversary of the first successful operation of the laser in 1960 by physicist and engineer, Theodore Maiman.
- 111 Mayfalse
- 212 Mayfalse
- 310 Mayfalse
- 416 Maytrue
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