Simon Bridge said:@Nikhil faraday : the idea was that the person whose homework it is should answer the question "what does threshold wavelength mean?" etc. Since understanding what that term means is basically what the homework is about, we shouldn't really say directly.
No harm - let's see how OP responds.Nikhil faraday said:I am really sorry for that.
The photoelectric effect is a phenomenon where electrons are emitted from the surface of a material when it is exposed to light. It was first discovered by Heinrich Hertz in 1887 and was later explained by Albert Einstein in 1905.
The photoelectric effect is caused by the interaction between photons (particles of light) and electrons in a material. When a photon with enough energy strikes the surface of a material, it can transfer its energy to an electron, causing it to be emitted from the surface.
The photoelectric effect played a crucial role in the development of quantum mechanics and helped establish the idea of light as a particle rather than a wave. It also has practical applications, such as in solar panels, photodiodes, and photocells.
The intensity of light affects the number of electrons emitted, while the frequency of light affects their kinetic energy. Higher intensity light will cause more electrons to be emitted, while higher frequency light will cause the emitted electrons to have greater kinetic energy.
The work function is the minimum amount of energy needed to remove an electron from the surface of a material. It is specific to each material and can be thought of as the "binding energy" that holds the electrons to the material's surface.