## Finding Wavelength and Energy of Photon

$c=\lambda v$

Veronica_Lubera_2A
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### Finding Wavelength and Energy of Photon

How would you solve this question? Specifically, the energy per one photon of radiation?

The meter was defined in 1963 as 1,650,763.73 wavelengths of radiation emitted by krypton-86 (it has since been redefined). What is the wavelength of this krypton-86 radiation? What energy does one photon of this radiation have?

Thanks!

Nathan Nakaguchi 1G
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### Re: Finding Wavelength and Energy of Photon

To find the wavelength of Krypton-86 I would use the ratio that they gave you so: (1 meter/1,650,763.73 krypton wavelengths) * (1 Krypton wavelengths) to convert to krypton wavelength in meters (or nanometers). From there I would use the formula c= Wavelength * Frequency, solve for frequency, and plug that into E= h* Frequency to find the energy of the photon. Hope this helps!