[Answered] Which of the following devices use lasers? a. DVD players b. fiber optics communication systems ...

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Author Question: Which of the following devices use lasers? a. DVD players b. fiber optics communication systems ... (Read 95 times)

sdfghj

Hero Member
Posts: 552

on: Jul 28, 2018

Which of the following devices use lasers?
a. DVD players
b. fiber optics communication systems
c. photocopiers
d. UPC price scanners

Question 2

In which of the following energy level transitions for a hydrogen atom is a photon emitted?
a. n =1 to n = 2
b. n =3 to n = 2
c. n =2 to n = 1
d. n =1 to n = 4
e. n =4 to n = 3

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Marked as best answer by a Subject Expert

fatboyy09

Sr. Member
Posts: 358

Reply #1 on: Jul 28, 2018

Answer to Question 1

A, B, D

Answer to Question 2

B, C, E

sdfghj

Member
Posts: 552

Reply 2 on: Jul 28, 2018

Great answer, keep it coming

amynguyen1221

Member
Posts: 355

Reply 3 on: Yesterday

Gracias!

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