Dual Nature of Matter and Radiation
Physics ⇒ Modern Physics
Dual Nature of Matter and Radiation starts at 11 and continues till grade 12.
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Describe the dual nature of matter.
Explain why electrons do not escape from a metal surface when illuminated with light of frequency below the threshold frequency, regardless of intensity.
Explain why the de Broglie wavelength of a macroscopic object is not observable.
Explain why the photoelectric effect supports the particle nature of light.
Name the scientist who first explained the photoelectric effect using the quantum theory of light.
State Planck's quantum hypothesis.
The energy of a photon is given by E = hν. What does 'h' represent in this equation?
What is meant by the term 'photon'?
If the momentum of a particle is doubled, its de Broglie wavelength becomes (1) doubled (2) halved (3) unchanged (4) quadrupled
The de Broglie hypothesis applies to (1) only electrons (2) only photons (3) all matter (4) only protons
Which experiment demonstrated the wave nature of electrons? (1) Davisson-Germer experiment (2) Millikan oil drop experiment (3) Rutherford scattering experiment (4) Stern-Gerlach experiment
Which experiment provided evidence for the particle nature of light? (1) Young's double-slit experiment (2) Photoelectric effect (3) Compton effect (4) Diffraction of X-rays
The Davisson-Germer experiment confirmed the ________ nature of electrons.
The de Broglie wavelength of a particle is inversely proportional to its ________.
The energy of a photon is directly proportional to its ________.
The kinetic energy of photoelectrons is independent of the ________ of incident light.
Does increasing the intensity of incident light increase the maximum kinetic energy of photoelectrons? (Yes/No)
If the frequency of incident light is less than the threshold frequency, will photoelectric emission occur? (Yes/No)
State whether the following statement is true or false: 'All moving objects have a de Broglie wavelength.'
State whether the following statement is true or false: 'Electrons exhibit both wave-like and particle-like properties.'
