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Author Question: How many times greater is the speed of red light ( = 700 nm) than the speed of violet light ( = 400 ... (Read 76 times)

mcmcdaniel

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on: Jul 28, 2018
How many times greater is the speed of red light ( = 700 nm) than the speed of violet light ( = 400 nm) in a vacuum?

Question 2

Assume electrons are accelerated through a potential difference of 25000 V inside a TV picture tube. What is the minimum wavelength that could be produced when the electrons strike the phosphor? (1  = 1010 m)
 a. 0.50
  b. 1.0
  c. 10
  d. 100
  e. 0.25


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dlook33

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Reply #1 on: Jul 28, 2018
Answer to Question 1

Both have the same speed, c.

Answer to Question 2

a


mcmcdaniel

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Reply 2 on: Jul 28, 2018
Excellent

Sarahjh

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Reply 3 on: Yesterday
Wow, this really help

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