Recall the number of particles in the ground state E0 = 0 given by
N0 = (g0)/(eαeE0/kT − 1) = (1)/(eα − 1)
Show that N0 ≈ 1/α for small values of α.
☞Since , in the question.
→Expanding the exponential term , we get
Because,
Now, for small values of , the terms , ... and all higher orders are very very small and are neglected.( for small value of )
So we are left with only
or
Hence proved.
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