Question

For a particle inside a box, the potential is maximum at x = ___________

(a) L

(b) 2L

(c) L/2

(d) 3L

The question was posed to me during an interview for a job.

Question is taken from Particle in a Box topic in chapter Quantum Physics of Engineering Physics I

Answer 1

Correct option is (a) L

Best explanation: In a box with infinitely high barriers with infinitely hard walls, the potential is infinite when x = 0 and when x = L.