What do we call the minimum energy that is required by an electron to leave the metal target in the photoelectric effect? select one of the options below as your a. energy function b. minimum function c. work function d. quanta e. electrical energy

C. work function

Explanation:

In the photoelectric effect, the energy of the incident photon is used in part to extract the electron from the metal (and this energy is called work function) and the rest is converted into kinetic energy of the electron. In formula:

where

hf is the energy of the incident photon, which is the product between h (the Planck constant) and f (the photon's frequency)

is the work function

K is the kinetic energy of the photoelectron as it leaves the material

the duration of a photographic flash is related to an rc time constant, which is 0.100 μs for a certain camera.

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.