Author Question: An electron is in an infinite square well (a box) that is 2.0 nm wide. The electron makes a ... (Read 120 times)

formula1 · **on:** Jul 29, 2018

An electron is in an infinite square well (a box) that is 2.0 nm wide.

The electron makes a transition from the n = 8 to the n = 7 state, what is the wavelength of the emitted photon?(h = 6.626 10-34 J s, mel = 9.11 10-31 kg, 1 eV = 1.60 10-19)
A) 880 nm
B) 750 nm
C) 610 nm
D) 1000 nm
E) 1100 nm

Question 2

A 3.10-eV electron is incident on a 0.40-nm barrier that is 5.67 eV high.

What is the probability that this electron will tunnel through the barrier? (1 eV = 1.60 10-19 J, mel = 9.11 10-31 kg,
h = 1.055 10-34 J s, h = 6.626 10-34 J s)
A) 1.4 10-3
B) 9.0 10-4
C) 1.0 10-3
D) 1.5 10-3
E) 1.2 10-3