Photon Energy of Red Light

What is the energy of one photon of red light?

Based on the data provided, what is the energy of one photon of red light with a wavelength of 675 nm?

Answer:

The energy of one photon of red light with a wavelength of 675 nm is 2.94 × 10^-19 J.

The energy of one photon of red light can be calculated using the equation E = hc/λ, where E is the energy of the photon, h is Planck's constant (6.626 × 10^-34 J·s), c is the speed of light (3.0 × 10^8 m/s), and λ is the wavelength of the light.

In this case, the wavelength of the red light is given as 675 nm. Converting this wavelength to meters, we get 6.75 × 10^-7 m.

Plugging these values into the equation, we have E = (6.626 × 10^-34 J·s)(3.0 × 10^8 m/s)/(6.75 × 10^-7 m) = 2.94 × 10^-19 J.

Therefore, the energy of one photon of red light with a wavelength of 675 nm is 2.94 × 10^-19 J.