Who Invented Laser?

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Who Invented Laser?

Asked on 2018-02-09 03:29:29 by Guest | Votes 0 | Views: 22 | Tags: discoveries and inventions | general knowledge | ssc chsl tier 1 29th january 2017 shift 1 | ssc chsl tier 1 2016 | ssc chsl 2016 | ssc chsl | Add Bounty

Who Invented Laser?
1). William Friese-Greene
2). Arthur Fry
3). Gordon Gould
4). Otto von Guericke

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1 answers

1 vote

Answered by Guest on 2018-02-21 23:59:55 | Votes 1 | #

i think option 3 is correct

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