Selected MCQ

Current Question
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 1
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 2
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.
Related Question 3
Which symmetry leads to conservation of energy (Noether’s theorem)?
  • A. Spatial symmetry
  • B. Time translation symmetry
  • C. Rotational symmetry
  • D. Gauge symmetry
Correct Answer: B
Explanation:
Invariance under time translation implies energy conservation.
Related Question 4
Which interaction violates parity symmetry?
  • A. Strong
  • B. Electromagnetic
  • C. Weak
  • D. Gravitational
Correct Answer: C
Explanation:
Weak interaction is not symmetric under spatial inversion.