Question

What is the value of wave funct at the surface of an infinite potential is
1)0
2) infinite
3)1

Answer 1

The wave function has the form

$$\varPsi_n=B\sin{\frac {n\pi x} {L}} (1)$$

For infinite potential we have:

$$L\rightarrow \infty (2)$$

We put (2) in(1) and got:

$$\varPsi_n=0$$

Answer:

1)0