Modern Physics Introduction Photon Energy and Wavelength

[fallen186]

Homework Statement

Suppose that a beam of light consists of photons having an energy of 5.4 eV. what is the wavelength of the light?

Homework Equations

hc = 1240 eV*nm

$$E = \frac{hc}{\lambda}$$

The Attempt at a Solution

$$5.4eV = \frac{1240eV*nm}{\lambda}$$

$$\lambda = \frac{1240ev*nm}{5.4eV}$$
$$\lambda = 229.630 nm$$

 

[ideasrule]

That's correct.