Selected MCQ

Current Question
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 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
In a Hilbert space formulation of quantum mechanics, physical states are represented by:
  • A. Real numbers
  • B. Vectors up to a global phase
  • C. Scalars only
  • D. Matrices only
Correct Answer: B
Explanation:
States are rays in Hilbert space, invariant under global phase.
Related Question 3
Which quantum number determines orbital shape?
  • A. Principal
  • B. Azimuthal
  • C. Magnetic
  • D. Spin
Correct Answer: B
Explanation:
Azimuthal quantum number defines orbital geometry.
Related Question 4
In quantum mechanics, the commutator ([x,p]) equals:
  • A. 0
  • B. (i\hbar)
  • C. (-i\hbar)
  • D. (\hbar^2)
Correct Answer: B
Explanation:
Position and momentum operators satisfy ([x,p]=i\hbar).
Related Question 5
Which law governs blackbody radiation spectrum?
  • A. Newton’s law
  • B. Planck’s law
  • C. Boyle’s law
  • D. Hooke’s law
Correct Answer: B
Explanation:
Planck’s law describes spectral energy distribution.