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What is the energy of a photon of blue light with a frequency of 6.7 x 1014 Hz?

6.626 x 10-34 Js
9.9 x 10-49 J
4.4 x 10-19 J
1.0 x 1048 J

Respuesta :

The relationship between energy and wavelength is shown by:


 


E = hc/wavelength


 


As we can see, there is an inverse relation between energy and the wavelength. Wavelength can be written in terms of frequency by the relation:


Frequency = c / wavelength


Therefore, the energy equation is simplified to:


E = h x frequency

E = 6.62607004 × 10^-34 J s x 6.7 x 10^14 /s

E = 4.44 x 10^-19 J


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