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Which of the following is used in atomic clocks?..
1.
Which of the following is used in atomic clocks?
A.
Laser
B.
Quartz
C.
Maser
D.
Helium
Answer» D. Helium
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<p>Which of the following can be used in a vibrational analysis of structure?</p>
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<p>Laser is called as a non-material knife?</p>
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