NEET-XII-Physics
43: Bohr's Model and Physics of the Atom
- #9We have stimulated emission and spontaneous emission. Do we also have stimulated absorption and spontaneous absorption?Ans : When a photon of energy (E2 - E1 = hÏ…) is incident on an atom in the ground state, the atom in the ground state E1 may absorb the photon and jump to a higher energy state (E2). This process is called stimulated absorption or induced absorption.
Spontaneous absorption is the process by which an atom in its ground state spontaneously jumps to a higher energy state, resulting in the absorption of a photon.
We do not have any process such as spontaneous absorption. This is because for absorption, we need to incident a photon of sufficient energy on the atom to stimulate the atom for absorption.
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