A set of atoms in an excited state decays
(a) In general to any of the states with lower energy
(b) Into a lower state only when excited by an external electric field
(c) All together simultaneously into a lower state
(d) To emit photons only when they collide.
A set of atoms in an excited state decays
(a) In general to any of the states with lower energy
(b) Into a lower state only when excited by an external electric field
(c) All together simultaneously into a lower state
(d) To emit photons only when they collide.
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1 Answer
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This is a Multiple Choice Questions as classified in NCERT Exemplar
Answer- (a)
Explanation-A set of atoms in an excited state decays in general to any of the states with lower energy.
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Kindly go through the solution
Change in surface energy = work done
|DE0| = –10.2

]
= 3 m/s
n = 4
Number of transitions =
Kinetic energy: Potential energy = 1 : –2
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