What is minimum kinetic energy of photoelectron?
Minimum KE of the photoelectron is zero.
What is maximum kinetic energy in photoelectric effect?
According to Einstein’s photoelectric equation, the maximum kinetic of the photoelectrons is KEmax=hν−W. where h= Plank’s constant, ν= frequency of the incident radiation, W= work function for the material.
How do you find the kinetic energy of a photoelectric effect?
This value is the maximum possible kinetic energy of the photoelectron. The equation, which Einstein determined, says (electron’s maximum kinetic energy) = (energy of the incident light energy packet) minus (the work function). For the example, the electron’s maximum kinetic energy is: 2.99 eV – 2.75 eV = 0.24 eV.
What is the kinetic energy of a photoelectron emitted?
The maximum kinetic energy KEe of ejected electrons (photoelectrons) is given by KEe = hf − BE, where hf is the photon energy and BE is the binding energy (or work function) of the electron to the particular material.
What is minimum kinetic energy?
The kinetic energy of the particles is minimum in solid states. This is due to the strong intermolecular forces of attraction between the particles of solid. Thus the particles of solid states are tightly bonded.
What is threshold frequency for photoelectric effect?
The threshold frequency is defined as the minimum frequency of incident radiation below which the photoelectric emission is not possible completely.
What is Max kinetic energy?
Definition: The Maximum Kinetic Energy of a Photoelectron given Frequency. The maximum kinetic energy of a photoelectron is given by ? = ℎ ? − ? , m a x where ℎ is the Planck constant, ? is the frequency of the incident photon, and ? is the work function of the metal surface.
What is the minimum energy required to remove an electron?
Work function
This term is also related with photoelectric effect as discussed in option (A), So, Work function is defined as the minimum amount of energy needed to remove an electron from the atom. So, the minimum energy required to remove an electron is called the Work function.
What is the maximum kinetic energy?
The maximum kinetic energy of a photoelectron is given by ? = ℎ ? ? − ? , m a x where ℎ is the Planck constant, ? is the speed of light, ? is the wavelength of the incident photon, and ? is the work function of the metal surface.
Which maximum kinetic energy is possessed by?
Answer: If h is more then v is also more and as we know that Kinetic Energy of an object is directly proportional to square of velocity so Kinetic energy is maximum at ground.
What is the threshold frequency for photoelectric emission?
Threshold frequency in photoelectric effect is the minimum frequency of electromagnetic radiation which is required for the phenomenon of photoelectric emission to occur from a metal surface. It is a characteristic of electromagnetic radiation (light in case of photoelectric emission) and not metal.
How do you calculate minimum kinetic energy?
The uncertainty principle can be used to estimate the minimum value of average kinetic energy for such a particle. KE = x 10^ joules = eV = MeV = GeV.
What is the work function of the photoelectric effect?
The photoelectric effect is the result of collisions between photons and electrons that knock the electrons out of the metal. != work function: amount of energy binding the electron to the metal Recall that E=hf gives the energy of the photon.
How is the kinetic energy of a photoelectricron related to the light frequency?
The photoelectric current is directly proportional to the light intensity. The kinetic energy of the photoelectrons is directly proportional to the light frequency. The stopping potential is directly proportional to the frequency and the process is instantaneous.
How is the frequency of incident light related to kinetic energy?
The frequency of the incident light is directly proportional to the kinetic energy of the electrons and the wavelengths of incident light are inversely proportional to the kinetic energy of the electrons. If γ = γ th or λ =λ th then v max = 0. γ < γ th or λ > λ th: There will be no emission of photoelectrons.
How are threshold frequency and stopping potential of photoelectrons related?
Threshold frequency is different for different material. 2. Photoelectric current is directly proportional to intensity of light. 3. The K.E. of photoelectrons is directly proportional to frequency of light. 4. Stopping potential is directly proportional to frequency. 5. The process is instantaneous.