Find a simulation that will allow you to perform the photoelectric experiment virtually. Sketch a graph for each of the following relationships (controlled variables in parentheses): C. Maximum kinetic energy of the photoelectrons and frequency in order to determine both the work function for the metal and Planck's constant (metal and intensity). Questions for further analysis based on the three relationships investigated: C. Maximum Kinetic Energy of the Photoelectrons and Frequency a) What is the relationship between retarding potential and the kinetic energy of the emitted photoelectrons?
Quantum mechanics and hydrogen atom
Consider an electron of mass m moves with the velocity v in a hydrogen atom. If an electron is at a distance r from the proton, then the potential energy function of the electron can be written as follows:
Isotopes of Hydrogen Atoms
To understand isotopes, it's easiest to learn the simplest system. Hydrogen, the most basic nucleus, has received a great deal of attention. Several of the results seen in more complex nuclei can be seen in hydrogen isotopes. An isotope is a nucleus of the same atomic number (Z) but a different atomic mass number (A). The number of neutrons present in the nucleus varies with respect to the isotope.
Mass of Hydrogen Atom
Hydrogen is one of the most fundamental elements on Earth which is colorless, odorless, and a flammable chemical substance. The representation of hydrogen in the periodic table is H. It is mostly found as a diatomic molecule as water H2O on earth. It is also known to be the lightest element and takes its place on Earth up to 0.14 %. There are three isotopes of hydrogen- protium, deuterium, and tritium. There is a huge abundance of Hydrogen molecules on the earth's surface. The hydrogen isotope tritium has its half-life equal to 12.32 years, through beta decay. In physics, the study of Hydrogen is fundamental.
Find a simulation that will allow you to perform the photoelectric experiment virtually.
Sketch a graph for each of the following relationships (controlled variables in parentheses):
C. Maximum kinetic energy of the photoelectrons and frequency in order to determine both the work function for the metal and Planck's constant (metal and intensity).
Questions for further analysis based on the three relationships investigated:
C. Maximum Kinetic Energy of the Photoelectrons and Frequency
a) What is the relationship between retarding potential and the kinetic energy of the emitted photoelectrons?
b) What is the relationship between the kinetic energy of the photoelectrons and frequency?
c) Determine the values and discuss the significance of the following features of the graph of kinetic energy vs. frequency: vertical axis intercept, horizontal axis intercept, and slope.
d) Which metal investigated had the highest threshold frequency? What is the wavelength and energy (in eV) of this light at the threshold frequency?
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