Respuesta :
The energy of a single photon in a monochromatic beam of light of wavelength 625 nm is 1.99 eV.
Monochromatic mild is electromagnetic radiation (seen or invisible) of a certain wavelength. In idea, monochromatic mild has precisely simplest one wavelength, but in exercise this isn't always feasible, and therefore monochromatic mild continually consists of a (small) bandwidth of wavelengths.
Monochromatic means that every one of the light produced by using the laser is of a single wavelength. White mild is a mixture of all seen wavelengths. Sunlight is a combination seven colors. Monochromatic way 'identical color. essentially monochromatic is any light which is natural of a unmarried color.
Atoms of a chemical element in gaseous kingdom are subjected to an electric powered cutting-edge, to appropriate radiation, or to excessive enough temperature, they emit a mild spectrum with a fixed of discrete spectral strains monochromatic components, that are feature of the detail.
Energy = hc /λ
h is Planck's constant
c is speed of light
λ is wavelength
E = 6.62607004 × 10-34 3*10^8 / 625*10^-9
E = 1.99 eV
Hence, the energy of light of wavelength 625 nm is 1.99 eV.
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