How do you know if an electron will be ejected?
The number of electrons ejected can be determined by measuring the current between the wire and plate. In equation form, the photon energyis E = hf, where E is the energy of a photon of frequency f and h is Planck’s constant.
What is difference between intensity and frequency?
if you consider light is wave, intensity is related to light radiation energy and frequency is the number of waves per second. In particle nature, intensity is related to number of photons in the radiation.
Does stopping potential depend on light intensity?
Stopping potential does not depend on the intensity of incident light. On increasing intensity, the value of saturated current increases, whereas the stopping potential remains unchanged. Stopping potential does not depend on the intensity of incident radiation.
How does the energy of a photon change if the wavelength is doubled?
According to Quantum Theory of light proposed by Einstein, energy of a photon is equal to the product of planck’s constant and frequency i.e. So when we double the wavelength, the energy becomes half.
What happens to kinetic energy when frequency is doubled?
E is the kinetic energy of photons in joules. υ is the frequency of incident light. From this, we found that kinetic energy increases by more than double. So, option c is the correct answer.
What happens to the kinetic energy of photoelectrons when intensity of the light is doubled?
The kinetic energy of photoelectrons are independent of the intensity of light. So there will be no change in the maximum kinetic energy even if the intensity of light is doubled.
How does the kinetic energy of Photoelectronchange when intensity of radiation is increased?
Kinetic energy of photoelectrons increases with increase in the frequency of incident radiation.
What is the stopping potential if the intensity of the light is doubled?
A more intense light generates more electrons, but the electrons still have the same kinetic energy. The stopping potential is Vstop = 1.93 V after the intensity is doubled.
What determines the work function of a metal?
The work function (WF) of a metal can be defined as the minimum energy required to extract one electron from a metal.
What is the relation between frequency and kinetic energy?
The kinetic energy of photoelectrons increases with light frequency. Electric current remains constant as light frequency increases. Electric current increases with light amplitude. The kinetic energy of photoelectrons remains constant as light amplitude increases.