Both the nucleus and the atom of some element are in their respective first excited states. They get de-excited by emitting photons of wavelengths λ N , λ A respectively. The ratio λ N λ A is closest to:

Question

Both the nucleus and the atom of some element are in their respective first excited states. They get de-excited by emitting photons of wavelengths λ N , λ A respectively. The ratio λ N λ A is closest to:, 10 - 1, 10 - 6, 10, 10 - 10

MARKS App · Accepted Answer

λ N λ a = E a E N , where E a a n d E N are energies of photons from atom and nucleus respectively. E N is of the order of MeV and E a in few eV . So, λ N λ a = 10 - 6 .

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