1.1- Which of the following Einstein's coefficient represent spontaneous emission? a) A12 b) A21 c) B₁2 d) B21 1.2-The correct expression for the rate of stimulated emission is a) Rse A21N₂ b) Rse = A21uN₂ c) Rse = B21N₂ d) Rse = B₂1uN₂ 1.3-During population inversion, which of the following process is dominant? a) Stimulated Absorption b) Stimulated Emission, c) Spontaneous Emission d) Spontaneous Absorption 1.4-The relationship between N₁ and N₂ for stimulated emission to be dominant is a) N₁ = N₂ b) N₁>N₂ c) N₂>N₁ d) No such relationship.
1.1- Which of the following Einstein's coefficient represent spontaneous emission? a) A12 b) A21 c) B₁2 d) B21 1.2-The correct expression for the rate of stimulated emission is a) Rse A21N₂ b) Rse = A21uN₂ c) Rse = B21N₂ d) Rse = B₂1uN₂ 1.3-During population inversion, which of the following process is dominant? a) Stimulated Absorption b) Stimulated Emission, c) Spontaneous Emission d) Spontaneous Absorption 1.4-The relationship between N₁ and N₂ for stimulated emission to be dominant is a) N₁ = N₂ b) N₁>N₂ c) N₂>N₁ d) No such relationship.
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1.1- Which of the following Einstein's coefficient represent spontaneous emission?
a) A12 b) A21 c) B12 d) B21
1.2-The correct expression for the rate of stimulated emission is
a) Rse A21N₂ b) Rse = A21uN₂ c) Rse = B21N2 d) Rse = B21UN₂
1.3-During population inversion, which of the following process is dominant? a) Stimulated
Absorption b) Stimulated Emission, c) Spontaneous Emission d) Spontaneous Absorption
1.4-The relationship between N₁ and N₂ for stimulated emission to be dominant is
a) N₁ = N₂ b) N₁>N₂ c) N₂> N₁ d) No such relationship.
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