In the above 2-level atomic system, if N1 is the number density of atoms in the first level and N2 that in the second level, then, ln(N1/N2) is ____. (Answer must be entered as an integer)NOTE: The function ‘ln’ above refers to Natural Logarithm

In the above 2-level atomic system, if N1 is the number density of at

1.	In the above 2-level atomic system, if N1 is the number density of atoms in the first level and N2 that in the second level, then, ln(N1/N2) is ____. (Answer must be entered as an integer)NOTE: The function ‘ln’ above refers to Natural Logarithm
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In the above 2-level atomic system, if N1 is the number density of atoms in the first level and N2 that in the second level, then, ln(N1/N2) is ____. (Answer must be entered as an integer)NOTE: The function ‘ln’ above refers to Natural Logarithm​

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In the above 2-level atomic system, if N1 is the number density of atoms in the first level and N2 that in the second level, then, ln(N1/N2) is ____. (Answer must be entered as an integer)NOTE: The function ‘ln’ above refers to Natural Logarithm