Einstein, quanta in light and atoms
  • 1. Who is known for the theory of relativity?
A) Nikola Tesla
B) Albert Einstein
C) Galileo Galilei
D) Isaac Newton
  • 2. What is the speed of light in a vacuum?
A) 500,000,000 meters per second
B) 100,000,000 meters per second
C) 299,792,458 meters per second
D) 150,000 meters per second
  • 3. What does E=mc2 represent?
A) Electromagnetic wave equation
B) Velocity formula
C) Equivalence of mass and energy
D) Atomic structure
  • 4. Which experiment demonstrated the wave-particle duality of light?
A) Michelson-Morley experiment
B) Compton scattering
C) Stern-Gerlach experiment
D) Double-slit experiment
  • 5. Who formulated the uncertainty principle?
A) Werner Heisenberg
B) Erwin Schrödinger
C) Max Planck
D) Niels Bohr
  • 6. What is a photon?
A) A fundamental particle of light
B) An electron neutrino
C) A unit of magnetic field
D) A type of quark
  • 7. In the photoelectric effect, what happens when light hits a metal surface?
A) Electrons are ejected from the metal
B) The metal changes color
C) The metal expands
D) The metal heats up
  • 8. Which property of light can be explained using photon theory?
A) Diffraction
B) Photoelectric effect
C) Interference
D) Polarization
  • 9. What is the term for the smallest unit of light?
A) Neutrino
B) Boson
C) Photon
D) Quark
  • 10. What are the energy levels in an atom where electrons can exist called?
A) Orbitals
B) Shells
C) Protons
D) Neutrons
  • 11. Who was the first physicist to propose the existence of quantized energy levels in atoms?
A) Niels Bohr
B) Erwin Schrödinger
C) Louis de Broglie
D) Werner Heisenberg
  • 12. What happens in quantum superposition?
A) State decays to a single possibility
B) Particles exhibit wave-particle duality
C) Particles are entangled at a distance
D) State of a system is a combination of multiple states simultaneously
  • 13. What is the Pauli Exclusion Principle in atomic physics?
A) No two electrons in an atom can have the same set of quantum numbers
B) Electrons repel each other
C) Electrons attract protons
D) Electrons have fixed trajectories
  • 14. Which property of light is used in calculating the energy of a photon?
A) Frequency
B) Amplitude
C) Speed
D) Wavelength
  • 15. Who proposed the wave-particle duality principle?
A) Louis de Broglie
B) Erwin Schrödinger
C) Max Planck
D) Werner Heisenberg
  • 16. In which year did Albert Einstein receive the Nobel Prize in Physics for his explanation of the photoelectric effect?
A) 1915
B) 1921
C) 1931
D) 1905
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