- #1

Air

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## Homework Statement

An electron recombines with a hole losing 2.6eV of electrical potential energy. Calculate the wavelength of the light emitted.

## Homework Equations

Not given. Equations have to be used ourself.

## The Attempt at a Solution

[itex]E = \frac{hc}{\lambda}[/itex]

[itex]\lambda = \frac{hc}{E}[/itex]

[itex]\lambda = \frac{(6.63 \times 10^{-34})(3.00 \times 10^8)}{2.6}[/itex]

[itex]\lambda = 7.65 \times 10^{-26}m[/itex]