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07-12-2017
Computers and Technology

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The laser in a compact disc (cd) player uses light with a wavelength of 715 nm. what is the frequency of this light?

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antonsandiego antonsandiego

20-12-2017

In order to get the frequency of this light you have to divide the speed of light by the wavelength.
The formula: [tex]F = c / w [/tex]
Set the values in the appropriate form:[tex]740nm = 7.40e-9m [/tex]

Solution:
[tex] 3.00e8m/s : 7.40e-9m F = 6.38e16Hz[/tex]
The answer: = 63.8PHz

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