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Describe briefly what is meant by Free particle Potential Step Potential Well a) particle in a...

Describe briefly what is meant by

  1. Free particle

  2. Potential Step

  3. Potential Well

a) particle in a box (infinite wall)

b) particle in a finite wall

4.Potential Barrier (Particle tunneling through potential barrier)

Give a physical example of each case. Also describe their energy levels.

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