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#1 2017-10-12 15:59:18
- shakeel123
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The idea of laser device was first introduced by C.H. Townes and ...
12th Class Punjab Board Exams Quizzes MCQs Quizzes Punjab Physics 12th Class Chapter 9 Atomic Spectra
Question:
The idea of laser device was first introduced by C.H. Townes and Authors Schowlan is:
Option A):
1965
Option B):
1972
Option C):
1913
Option D):
1958
Correct Answer is Option D):
1958
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Re: The idea of laser device was first introduced by C.H. Townes and ...
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