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

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