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Period and frequency of a lightwave

  • Thread starter menco
  • Start date
  • #1
43
0

Homework Statement


If a lightwave has a wavelength of 630nm, what is the period and frequency?


Homework Equations


F=c/v
T=1/F


The Attempt at a Solution


F = 3x10^8/6.3x10^-7 = 4.76Hz

T = 1/F = 1/4.76 = 0.21s

Am I correct or way off? I converted the wavelength to meters hoping this was correct
 

Answers and Replies

  • #2
318
0
Converting the wavelength to meter is correct, but you are still way off. Take a look at your powers of 10 again.
 
  • #3
Yeah menco, there is a calculation error and nothing else.
 
  • #4
43
0
Ah yes i forgot to put it in brackets on the calculator. I had another try and got

4.76x10^14 Hz and 2.1x10^-15 seconds
 
  • #5
1,137
0
2.1x10^-15 seconds
2.1 x 10-15 s-1 ,, not just s
 
  • #6
318
0
Seconds is ok. The result looks good menco.
 

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