Question

An atom is in its excited state. Does the probability of its coming to ground state depend on whether the radiation is already present or not? If yes, does it also depend on the wavelength of the radiation present?

Answer 1

The presence of radiation in the atom coming from the excited state to the ground state depends upon the time up emission whether it is stimulated emission or spontaneous emission.

Explanation:

• If the atom comes to the ground state from the excited state due to stimulated emission, Then it also depends on the wavelength of radiation.
• Whereas in case of spontaneous emission, The atom will come to its ground state from the excited state spontaneously and Hence it will not depend on the wavelength of radiation.

Answer 2

Answer:

Explanation:

The presence of radiation in the atom coming from the excited state to the ground state depends upon the time up emission whether it is stimulated emission or spontaneous emission.

Explanation:

   If the atom comes to the ground state from the excited state due to stimulated emission, Then it also depends on the wavelength of radiation.

   Whereas in case of spontaneous emission, The atom will come to its ground state from the excited state spontaneously and Hence it will not depend on the wavelength of radiation.