• Support PF! Buy your school textbooks, materials and every day products Here!

Calculate the frequency of red light of wavelength

  • Thread starter looi76
  • Start date
  • #1
81
0

Homework Statement


The speed of light is [tex]3 \times 10^8 ms^{-1}[/tex]. Calculate the frequency of red light of wavelength [tex]6.5 \times 10^{-7} m[/tex].

Homework Equations


[tex]v = f\lambda[/tex]
[tex]f = \frac{v}{\lambda}[/tex]

The Attempt at a Solution



[tex]v = 3 \times 10^8 \ ms^{-1}[/tex]
[tex]\lambda = 6.5 \times 10^{-7} \ m[/tex]

[tex]f = \frac{3 \times 10^8 }{6.5 \times 10^{-7} }[/tex]

[tex]f = 4.6 \times 10^{14} Hz[/tex]
[tex]f = 450 THz[/tex]

Is my answer correct?
 

Answers and Replies

  • #2
303
0

[tex]f = 4.6 \times 10^{14} Hz[/tex]
[tex]f = 450 THz[/tex]

Is my answer correct?
Everything looked fine until [itex]4.6 \times 10^{14}[/itex] became [itex]450 \times 10^{12}[/itex].

Regards,

Bill
 

Related Threads for: Calculate the frequency of red light of wavelength

Replies
2
Views
3K
  • Last Post
Replies
5
Views
4K
  • Last Post
Replies
1
Views
1K
Replies
3
Views
41K
  • Last Post
Replies
4
Views
13K
Replies
2
Views
22K
  • Last Post
Replies
1
Views
3K
Replies
5
Views
2K
Top