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Problem: What is the wavelength, in nm, of a photon with energy (a) 0.30 eV, (b) 3.0 eV and (c) 30 eV? For each, is this wavelength visible light, ultraviolet or infrared? 

FREE Expert Solution

The relationship between wavelength and energy of a photon is:

E=hcλ

Therefore, wavelength, λ is expressed as:

λ=hcE, where h is the Plank's constant and c is the speed of light in a vacuum. 

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Problem Details

What is the wavelength, in nm, of a photon with energy (a) 0.30 eV, (b) 3.0 eV and (c) 30 eV? For each, is this wavelength visible light, ultraviolet or infrared? 

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