Selected MCQ

Current Question
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.
Related Question 1
Which equation governs fluid motion?
  • A. Schrödinger
  • B. Navier–Stokes
  • C. Maxwell
  • D. Dirac
Correct Answer: B
Explanation:
Navier–Stokes describes fluid dynamics.
Related Question 2
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 3
Which equation governs quantum evolution?
  • A. Newton’s second law
  • B. Schrödinger equation
  • C. Maxwell equation
  • D. Navier-Stokes equation
Correct Answer: B
Explanation:
Schrödinger equation describes time evolution of wavefunction.
Related Question 4
Which law predicts the effect of concentration on equilibrium position?
  • A. Hess’s law
  • B. Le Châtelier’s principle
  • C. Boyle’s law
  • D. Faraday’s law
Correct Answer: B
Explanation:
Equilibrium shifts to oppose an imposed concentration change.
Related Question 5
Which equation describes wave speed?
  • A. (v = f\lambda)
  • B. (v = at)
  • C. (v = u + at)
  • D. (v = s/t)
Correct Answer: A
Explanation:
Wave speed equals frequency times wavelength.