Selected MCQ

Current Question
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 1
Which phenomenon cannot be explained by classical physics?
  • A. Reflection
  • B. Refraction
  • C. Blackbody radiation spectrum
  • D. Sound waves
Correct Answer: C
Explanation:
Classical theory fails to explain ultraviolet catastrophe.
Related Question 2
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 3
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 4
Which symmetry is broken in superconductivity?
  • A. Translational
  • B. Gauge symmetry
  • C. Rotational
  • D. Time symmetry
Correct Answer: B
Explanation:
Superconductivity involves spontaneous gauge symmetry breaking.
Related Question 5
Which conservation law arises from rotational symmetry?
  • A. Energy
  • B. Linear momentum
  • C. Angular momentum
  • D. Charge
Correct Answer: C
Explanation:
Noether’s theorem links rotational symmetry to angular momentum conservation.