GRE Subject Test: Physics : Square Wells/Particle in a Box

Study concepts, example questions & explanations for GRE Subject Test: Physics

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Example Questions

Example Question #1 : Square Wells/Particle In A Box

If a ground state particle is in a one-dimension square well, where is the probability of finding the particle equal to zero?

Possible Answers:

 the way in the box.

None of these

At the boundary.

 the way in the box.

In the middle.

Correct answer:

At the boundary.

Explanation:

This is a fundamental concept question. For a ground state particle, the only place where the probability is equal to zero is at the boundary because the particle cannot be found there. He has to be in the box (not unlike a cat).

All GRE Subject Test: Physics Resources

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