The human eye is sensitive to blue light having a frequency of about 6.4 1014 Hz (a wavelength of about 475 nm). What is the energy in joules of the photons associated with this light? J

Answer 1

Question: The human eye is sensitive to blue light having a frequency of about 6.4 10¹⁴ Hz (a wavelength of about 475 nm). What is the energy in joules of the photons associated with this light?

Solution

The energy per photon (in Joules) is given by E = hν where ν is the frequency and h is Planck's constant.

h = 6.62607015×10⁻³⁴

E = 6.626×10⁻³⁴ * 6.4 10¹⁴ = 4.24 x 10^-19 Joules per photon.