A photoelectric experiment was performed by separately shining a laser at 450 nm (blue light) and a laser at 560 nm (yellow light) on a clean metal surface. Both wavelengths are above the theshold wavelength for the metal, and the same amount of energy is delivered to the metal surface by each laser.
Which laser would shed more electrons, and which laser would shed electrons with the most kinetic energy?
The number of electrons depends on the number of photonsJules18 said:I thought the # of e- only depended on the intensity of the light
Yes, how is energy related to number of photons?and the question says the same amt. of energy was delivered by each laser.
The Photoelectric Effect is the phenomenon where electrons are emitted from a material when it is exposed to electromagnetic radiation, such as light.
The Photoelectric Effect occurs when photons of light hit a material with enough energy to knock electrons out of their atoms. These freed electrons can then be collected and used for various purposes.
The Photoelectric Effect is significant because it was one of the first evidences of the dual nature of light as both a wave and a particle. It also led to the development of important technologies such as solar cells and photocells.
The Photoelectric Effect involves the emission of electrons from a material, while the Compton Effect involves the scattering of photons by electrons. Additionally, the Photoelectric Effect is more prominent for low-energy photons, while the Compton Effect is more prominent for high-energy photons.
The Photoelectric Effect has many practical applications, such as in solar panels for generating electricity, photocells for detecting light in cameras and automatic doors, and photomultiplier tubes for detecting and amplifying very low levels of light.