in the laser occurs when photon colliding with an excited atom causes – McqOptions

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1.	in the laser occurs when photon colliding with an excited atom causes the stimulated emission of a second photon.
A.	light amplification
B.	attenuation
C.	dispersion
D.	population inversion
Answer» B. attenuation

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in the laser occurs when photon colliding with an excited atom causes the stimulated emission of a second photon.