Q: Write Einstein's photoelectric equation and explain the terms involved.

Einstein's photoelectric equation is given by $ K{\max} = h\nu - \phi0 $ or $ eV0 = h\nu - h\nu0 $. Here, $ K{\max} $ is the maximum kinetic energy of the emitted photoelectrons, $ h\nu $ is the energy of the incident photon, $ h $ is Planck's constant, $ \nu $ is the frequency of incide

Question 1

What is meant by the dual nature of radiation and matter?

Accepted Answer

The dual nature of radiation and matter implies that depending on the circumstances, radiation and matter exhibit sometimes wave-like properties and sometimes particle-like properties. In phenomena like interference, diffraction, and polarization, light behaves as a wave, whereas in phenomena like t

Question 2

Define work function in the context of the photoelectric effect.

Accepted Answer

The work function is defined as the minimum amount of energy required by an electron to escape from the metal surface completely without imparting any kinetic energy to it. It is a characteristic property of the metal and depends entirely on the nature of the metal surface. It is usually denoted by

Question 3

What is threshold frequency? State its significance.

Accepted Answer

Threshold frequency is defined as the minimum frequency of incident radiation below which no photoelectric emission takes place from a given metal surface, no matter how intense the incident light is. Its significance lies in the fact that it establishes a lower limit of frequency for the photoelect

Question 4

Write Einstein's photoelectric equation and explain the terms involved.

Accepted Answer

Einstein's photoelectric equation is given by $ K{\max} = h\nu - \phi0 $ or $ eV0 = h\nu - h\nu0 $. Here, $ K{\max} $ is the maximum kinetic energy of the emitted photoelectrons, $ h\nu $ is the energy of the incident photon, $ h $ is Planck's constant, $ \nu $ is the frequency of incide

Question 5

Define stopping potential in relation to photoelectric emission.

Accepted Answer

Stopping potential is defined as the minimum negative (retarding) potential applied to the anode with respect to the cathode for which the photoelectric current becomes zero. It provides a direct measure of the maximum kinetic energy of the emitted photoelectrons because the work done by the stoppin

Dual Nature of Radiation and Matter