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Author Question: The efficiency of classroom-demonstration lasers is typically A) about one percent. B) about ten ... (Read 38 times)

Wadzanai

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on: Jul 29, 2018
The efficiency of classroom-demonstration lasers is typically
 
  A) about one percent.
  B) about ten percent.
  C) about twenty percent.
  D) more than twenty percent.

Question 2

Compared to the energy put into a laser, the energy of the laser beam is
 
  A) usually much more.
  B) much less.
  C) the same.
  D) none of the above


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Shshxj

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

Answer: A

Answer to Question 2

Answer: B


Wadzanai

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Reply 2 on: Jul 29, 2018
Wow, this really help

triiciiaa

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Reply 3 on: Yesterday
Excellent

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