Question

Particle in a box can never be at rest.

(a) True

(b) False

The question was asked in an interview for job.

My enquiry is from Particle in a Box in section Quantum Physics of Engineering Physics I

Answer 1

The correct answer is (a) True

Best explanation: If the particle in a box has zero energy, it will be at rest inside the well and it violates the Heisenberg’s Uncertainty Principle. Thus, the minimum energy possessed by a particle is not equal to zero.