Photoelectric Effect Lab Exam Model Equation
This page will show the model equations in poor gamer's cellphone in the video When a Gamer Student Fails Online School [feat. Poor Gamer]
Disclaimer: The page is made to show the basics of Photoelectric effects to my YouTube audience, whom are typically very young and also showcase the model equation for a lab exam using basic algebra and linear graphical analysis. This is not a in-depth explanation of the topic, if you are looking to study this topic, Khan Academy has a website about it.
Lights are electromagnetic waves arranged in quanta called photons. It act as a light and a particle.
The energy of each photon is given by Planck's relationship, h is the Planck's constant (6.63 x 10-34
Ephoton = hf
If the energy of photon is large enough, it is able to knock out electrons from a metal, inducing a current known as photoelectric current. Which also gives electrons kinetic energy.
The work function (ø) of a metal is the minimum energy required for an electron to be ejected. If the photon does not have that energy, it will not induce photoelectric current.
Using conservation of energy, the kinetic energy of electrons is
EK = hf - ø
The kinetic energy is also known as mv2 /2
In the video, poor gamer and Kevin were trying to find the model equation for an lab exam which requires them to determine the mass of electrons.
Different wavelength of lights were shined on the metal plate. The wavelength of light and the speed of electrons were measured. And these data will be used to determine the mass of the electron. The velocity on the electron was caused because a wavelength of light was shine on the metal plate. Therefore, the velocity (v) is on the y axis and wavelength (lambda) is on the x axis, the slope of the equation can be used to determine mass of electron.
This page will show the model equations in poor gamer's cellphone in the video When a Gamer Student Fails Online School [feat. Poor Gamer]
Disclaimer: The page is made to show the basics of Photoelectric effects to my YouTube audience, whom are typically very young and also showcase the model equation for a lab exam using basic algebra and linear graphical analysis. This is not a in-depth explanation of the topic, if you are looking to study this topic, Khan Academy has a website about it.
Lights are electromagnetic waves arranged in quanta called photons. It act as a light and a particle.
The energy of each photon is given by Planck's relationship, h is the Planck's constant (6.63 x 10-34
Ephoton = hf
The work function (ø) of a metal is the minimum energy required for an electron to be ejected. If the photon does not have that energy, it will not induce photoelectric current.
Using conservation of energy, the kinetic energy of electrons is
EK = hf - ø
The kinetic energy is also known as mv2 /2
In the video, poor gamer and Kevin were trying to find the model equation for an lab exam which requires them to determine the mass of electrons.
Different wavelength of lights were shined on the metal plate. The wavelength of light and the speed of electrons were measured. And these data will be used to determine the mass of the electron. The velocity on the electron was caused because a wavelength of light was shine on the metal plate. Therefore, the velocity (v) is on the y axis and wavelength (lambda) is on the x axis, the slope of the equation can be used to determine mass of electron.
Here is a more detailed look on writing the model equation in y=mx+b form.