the eye of the reptile!

The eyes of certain member of the reptile family pass a single visual signal to the brain when the visual receptors are struck by photons of wavelength 132.6 nm. If a total energy of $3\times 10^{-14}$ J is required to trip the signal, what is the minimum number of photons that must strike the receptor?

Constants

• Plank's constant, $h = 6.63\times 10^{-34}\text{ J}\cdot\text{s}.$
• Speed of light, $c = 3\times 10^{8}\text{ m/s}.$