Energy Flashcards
What happens to photoelectric emissions when the intensity of light is increased?
More photo emissions are increased but the range of energy in the emissions remains the same
What happens to photoelectron emission when the frequency of light is decreased?
The same amount of photoelectrons are released but they have a lower kinetic energy
What happens to photoelectron emission when the frequency of light falls below the lower limit?
Photo electron emission ceases. This level is different depending on the metal.
Photonic energy is proportional to the frequency of light. What frequency carries more energy, Ultra-violet or Infra- Red?
Ultra violet light has a higher frequency and therefore carries more photonic energy.
Photonic energy is equal to…
Plank’s constant x The frequency of light
Whats the equation to calculate frequency and wavelength
C = Lambda/Frequency
Where C is the constant for the speed of light and
Lambda is wavelength
What is the ground state of an electron?
An electron is said to be in its ground state when its at its lowest energy level. In an atom this is usually closest to the nucleus.
What is ionization energy?
The Energy required to remove an electron
