How to Calculate the Energy of One Photon of Light?
Question:
What is the energy of one photon of light with a wavelength of 486.0 nm?
Answer:
The correct answer to the following question will be "4.08 × 10⁻¹⁹ Joule".
When calculating the energy of one photon of light, we can use the formula:
Energy = Planck's constant × frequency = Planck's constant × speed of light / wavelength
Given that the wavelength is 486.0 nm, we first need to convert it to meters by dividing by 10⁹ (since 1 meter = 10⁹ nanometers). This gives us:
Wavelength = 486.0 nm = 486.0 × 10⁻⁹ meters
Plugging this value into the formula along with Planck's constant and the speed of light, we can calculate the energy of the photon:
Energy = Planck's constant × speed of light / wavelength
After performing the calculations, we find that the energy of one photon of light with a wavelength of 486.0 nm is 4.08 × 10⁻¹⁹ Joule.