Question
Asked Nov 17, 2019
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Infared light has a lower frequency than visible light.  What is the frequency of IR light that has a wavelength of 680 nm?

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Expert Answer

Step 1

Given:

Wavelength of IR light, λ = 680 nm

Velocity of light, c = 3 X 108 m/s

Step 2

Frequency of infrared light ...

C
V =
where
cis the speed of light
2is the wavelength
vis the frequency
plug in the values
3x10
V =
680 x109
v = 4.41x 1014Hz
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C V = where cis the speed of light 2is the wavelength vis the frequency plug in the values 3x10 V = 680 x109 v = 4.41x 1014Hz

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