Why is your "Relevant equations" section blank? It is a photoelectric effect problem, look up the equation that describes the photoelectric effect.ZedCar said:Homework Equations
Planck's constant, denoted by the symbol h, is a fundamental constant in physics that relates the energy of a photon to its frequency.
Planck's constant can be determined from the gradient of a graph that plots the energy of a photon against its frequency. The gradient is equal to h divided by the charge of an electron.
Determining Planck's constant is significant because it allows us to understand the behavior of light and other electromagnetic radiation at a quantum level. It also has practical applications in fields such as electronics and telecommunications.
Planck's constant has a unit of joule-second (J·s) in the International System of Units (SI).
Planck's constant was first calculated by German physicist Max Planck in 1900 using experimental data on the radiation emitted by hot objects, known as blackbody radiation. He derived a mathematical formula that related the energy of a photon to its frequency, which included the constant h.