hage567 said:So what's the relationship between frequency and wavelength? You've already used it (look at equation 3).
The work function of a material is the minimum amount of energy required to remove an electron from the surface of the material. It is typically measured in electron volts (eV).
The work function is directly related to the wavelength of light through the photoelectric effect. When light with a certain wavelength hits the surface of a material, it can transfer enough energy to electrons to overcome the work function and cause them to be emitted from the material.
The work function is a critical factor in the photoelectric effect because it determines the minimum energy of light required to cause the emission of electrons. If the energy of the light is lower than the work function, no electrons will be emitted.
The work function can vary greatly between different materials, depending on their atomic structure and composition. Metals tend to have lower work functions, while non-metals have higher work functions.
Yes, the work function of a material can be changed by altering its surface conditions, such as by applying a coating or introducing impurities. External factors like temperature and electric fields can also affect the work function.