Selected MCQ

Current Question
Which phenomenon confirms existence of neutrinos?
  • A. Photoelectric effect
  • B. Beta decay energy spectrum
  • C. Reflection
  • D. Diffraction
Correct Answer: B
Explanation:
Missing energy in beta decay led to neutrino hypothesis.
Related Question 1
Which phenomenon confirms wave nature of electrons?
  • A. Photoelectric effect
  • B. Electron diffraction
  • C. Compton effect
  • D. Pair production
Correct Answer: B
Explanation:
Electron diffraction demonstrates wave behavior.
Related Question 2
Which phenomenon is explained by spontaneous symmetry breaking?
  • A. Refraction
  • B. Superconductivity
  • C. Diffusion
  • D. Reflection
Correct Answer: B
Explanation:
Superconductivity arises from broken gauge symmetry.
Related Question 3
Which phenomenon demonstrates quantization of angular momentum?
  • A. Diffraction
  • B. Zeeman effect
  • C. Photoelectric effect
  • D. Reflection
Correct Answer: B
Explanation:
Zeeman splitting arises from quantized angular momentum states.
Related Question 4
Which phenomenon proves quantization of charge?
  • A. Photoelectric effect
  • B. Millikan oil drop experiment
  • C. Compton scattering
  • D. Interference
Correct Answer: B
Explanation:
Oil drop experiment measured discrete electron charge.
Related Question 5
The Dirac equation predicts existence of:
  • A. Neutrons
  • B. Positrons
  • C. Photons
  • D. Quarks
Correct Answer: B
Explanation:
Dirac’s relativistic equation led to prediction of antimatter.