The electromagnetic spectrum that lies between 0.40 and 0.76 µm is what we call visible light. Within this spectrum, the color violet has the shortest wavelength while the color red has the longest wavelength. Determine which of these colors, violet (A = 0.40 um) or red (A = 0.76 um), propagates more photon energy.
The electromagnetic spectrum that lies between 0.40 and 0.76 µm is what we call visible light. Within this spectrum, the color violet has the shortest wavelength while the color red has the longest wavelength. Determine which of these colors, violet (A = 0.40 um) or red (A = 0.76 um), propagates more photon energy.
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Transcribed Image Text:The electromagnetic spectrum that lies between 0.40 and 0.76 um is what we call visible light. Within
this spectrum, the color violet has the shortest wavelength while the color red has the longest
wavelength. Determine which of these colors, violet (A = 0.40 um) or red (A = 0.76 µm), propagates
more photon energy.
Step-by-step solution
Step 1 of 3
Assume that the medium is air. The index of refraction for air is 1.
From the table 12-1 (The wave length rages of different colors), the wavelength for violet color is as
follows.
λ-040μm ,
Compute the speed of propagation of wave in the air by using the following formula.
Here, o is speed of light in a vacuum and " is index of refraction.
Substitute 2.9979×10° m/s for C and I for ".
2.9979 x 10* m/s
= 2.9979×10* m/s
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