0
You visited us 0 times! Enjoying our articles? Unlock Full Access!
Question

Work function is
  1. energy necessary to eject the electron from its orbit
  2. energy necessary to eject an electron from within a metal body
  3. minimum necessary energy to eject an electron from a metal surface
  4. wavelength necessary for releasing an electron from a body

A
energy necessary to eject the electron from its orbit
B
minimum necessary energy to eject an electron from a metal surface
C
energy necessary to eject an electron from within a metal body
D
wavelength necessary for releasing an electron from a body
Solution
Verified by Toppr

The work function is the minimum thermodynamic work (i.e., energy) needed to remove an electron from a solid to a point in the vacuum immediately outside the solid surface
Work function is defined as the minimum amount of energy required by an electron to escape from a metal surface.

Was this answer helpful?
0
Similar Questions
Q1
The photoelectric effect of Ba consists of emission of electrons from its ionisation energy on irradiation with light from the ionization energy of He-atom is irradiation with light. A photon with a minimum energy of 3.97×1019J is necessary to eject electron from Ba.
(a)What is the frequency of radiation corresponding to this value?
(b) Will a blue light of wavelength 450nm be able to eject at electron from Ba? (Given h=6.626×1027ergsec)
View Solution
Q2
The minimum energy necessary to overcome the attractive force between the electron and the surface of the silver metal is 7.52×1019 J. What will be the maximum kinetic energy of the electrons ejected from silver which is being irradiated with ultraviolet light having a wavelength 360˚A?
View Solution
Q3

The minimum energy necessary to overcome the attractive force between the electron and the surface of silver metal is 7.52 × 1019 J. What will be the maximum kinetic energy of the electrons ejected from silver which is being irradiated with ultraviolet light having a wavelength 360 Å?


View Solution
Q4
Light quanta with energy 4.9eV eject photoelectrons from metal with work function 4.5eV. Find the maximum impulse transmitted to the metal surface when electron are ejected.
View Solution
Q5
If the energy necessary to remove an electron from the krypton is 1350.7 kJmol1, then the Zeff value for the highest energy electrons in krypton is :
View Solution