The dual (wave-particle) nature of light is discussed clearly in this and preceding chapters. The wave nature of light is seen in phenomena such as diffraction, interference and polarisation. On the other hand, in phenomena such as Compton effect and the photoelectric effect that involve energy-momentum transfer, radiation behaves as a particle known as the photon. Study about Einstein’s photoelectric equation and De-Broglie’s Hypothesis in this chapter. Find here the CBSE class 12 physics revision notes for chapter 11 dual nature of radiation and matter that helps in the revision of this chapter.
Frequently asked Questions on CBSE Class 12 Physics Notes Chapter 11: Dual Nature of Radiation and Matter
What is ‘Photoelectric effect’?
The phenomenon of emission of electrons from the surface of the metal when the light of suitable frequency falls on it is called the photoelectric effect.
What is a ‘Magnetic field’?
The portion of space near a magnetic body or a current-carrying body in which the magnetic forces due to the body or current can be detected is called as a ‘Magnetic field’.
What is the ‘De Broglie’s’ equation?
λ = h/mv, where λ is wavelength, h is Planck’s constant, m is the mass of a particle, moving at a velocity v. de Broglie suggested that particles can exhibit properties of waves.