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trapecia [35]
3 years ago
9

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

Computers and Technology
1 answer:
oee [108]3 years ago
6 0
In order to get the frequency of this light you have to d<span>ivide the speed of light by the wavelength. 
The formula: </span>F = c / w<span>
Set the values in the appropriate form:</span>740nm = 7.40e-9m


Solution: 
3.00e8m/s : 7.40e-9m &#10;&#10;&#10;F = 6.38e16Hz
The answer:  = 63.8PHz
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