Frequency and wavelength question?

Question

Cobalt-60 is a radioactive isotope used to reat cancers of teh brain and other tissues. A gamma ray emitted by an atom of this isotope has an anergy of 1.33 MeV (million electron volts, 1 eV= 1.602x10^-19 J). What is the frequency in Hz and the wavelength (in m) of this gammy ray?

Answer 1

Hint:

The relation between energy and frequency is

(energy) = (Planck's constant) * (frequency).

The relation between frequency and wavelength is

(frequency) * (wavelength) = (speed of light).

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