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Helium-Neon laser discharge tube contains neon
Black Body radiation spectrum is an example of:
None of above
Charge on an atom is:
None of these
1 rad =
The velocity of electron moving is 1st orbit of hydrogen atom is:
2.18 x106 ms-1
2.19 x 106 ms-1
3.18 x106 ms-1
2.09 x 106 ms-1
The series in visible region is:
None of above
1 rem =
The idea of laser device was first introduced by C.H. Towners and Authers Schowlan is
If the ionization energy of hydrogen atom is 13.6 eV, its ionization potential will be
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