Quantum mechanics. Schrodinger question energy level question.

[P-Jay1]

Hey, I'm stuck. How do you do question B1 part 2?

Do you substitute h=p$$\lambda$$ into E=n^2h^2 / 8mL^2 ?

Question in link-
View attachment PHY215.pdf

 

[sgd37]

no you use the fact that $$E_{photon} = \frac{h}{\lambda} = E_n - E_0$$ where 0 stands for the energy of the groundstate

 

[P-Jay1]

Got it, thanks