Selected MCQ

Current Question
A particle in a one-dimensional infinite potential well has energy proportional to:
  • A. (n)
  • B. (n^2)
  • C. (1/n)
  • D. (\ln n)
Correct Answer: B
Explanation:
Energy levels scale as (n^2) in a particle-in-a-box model.
Related Question 1
Which energy is potential?
  • A. Motion
  • B. Stored
  • C. Heat
  • D. Light
Correct Answer: B
Explanation:
Potential energy is stored energy.
Related Question 2
In a relativistic particle collision, total energy is conserved but:
  • A. Mass is always conserved separately
  • B. Mass can convert into energy
  • C. Momentum is not conserved
  • D. Charge is not conserved
Correct Answer: B
Explanation:
Relativity allows interconversion of mass and energy via (E=mc^2).
Related Question 3
In a non-inertial rotating frame, the Coriolis force acting on a particle is proportional to:
  • A. Velocity squared
  • B. Angular velocity cross velocity
  • C. Mass only
  • D. Displacement
Correct Answer: B
Explanation:
Coriolis force is given by (2m(\vec{\Omega} \times \vec{v})).
Related Question 4
In the canonical ensemble, the probability of a microstate with energy (E_i) is proportional to:
  • A. (e^{+E_i/kT})
  • B. (e^{-E_i/kT})
  • C. (E_i/kT)
  • D. (1/E_i)
Correct Answer: B
Explanation:
The Boltzmann factor assigns lower probability to higher-energy microstates.
Related Question 5
Which energy source is sustainable?
  • A. Coal
  • B. Oil
  • C. Solar
  • D. Gas
Correct Answer: C
Explanation:
Solar is sustainable.