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