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Author Question: The inverted population necessary for laser action A) refers to the negative energy levels of ... (Read 67 times)

khang

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on: Jul 29, 2018
The inverted population necessary for laser action
 
  A)
 
  refers to the negative energy levels of electrons.
  B)
 
  comes from upside-down levels in certain atoms.
  C)
 
  refers to the higher energy state being populated more than one below it.
  D)
 
  is another way of saying coherent.
  E)
 
  is another way of saying incoherent.

Question 2

A diverging lens cannot be used as a magnifying glass.
 
  Indicate whether the statement is true or false


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jessofishing

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Reply #1 on: Jul 29, 2018
Answer to Question 1

C

Answer to Question 2

TRUE


khang

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Reply 2 on: Jul 29, 2018
:D TYSM

isabelt_18

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Reply 3 on: Yesterday
Excellent

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