Question

Which of the following has the lowest energy?

1) Yellow light (610 nm)
2) Infrared light (850 nm)
3) Violet light (410 nm)
4) Red light (690 nm)

Answer 1

Among the given options, infrared light (850 nm) has the lowest energy because it has a longer wavelength than visible red light.

Step-by-step explanation:

The energy of light is inversely related to its wavelength: the longer the wavelength, the lower the energy. According to the provided information, violet light has the shortest wavelength, and therefore, it carries the most energy, while red light has the longest wavelength and carries the least energy. Infrared light has a longer wavelength than visible red light, which makes it have even less energy. Therefore, among the given options, infrared light (850 nm) has the lowest energy.