An idealised atom has a non-degenerate ground state at zero energy and a
g -fold degenerate excited state of energy E. In a non-interacting system of
N such atoms, the population of the excited state may exceed that of the ground state above a temperature T greater than E/(2k_B ln2). The minimum value of g for which this is possible is
(a) 8 (b) 4 (c) 2 (d) 1
• Physics problem || #ph...
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