Your eyes have three different types of cones with maximum absorption at 437 nm, 533 nm, and 564 nm. what photon energies correspond to these wavelengths? (answer in ev)

The energy of a photon is given by the following formula:

  (1)

Where:

is the Planck constant

is the frequency in hertz

Now, the frequency has an inverse relation with the wavelength :

  (2)

Where is the speed of light in vacuum

Substituting (2) in (1):

  (3)

Knowing this, let's begin with the answers:

For

For

For