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Chapter 40: Q. 11 (page 1175)

An electron in a finite potential well has a 1.0nm penetration distance into the classically forbidden region. How far below U0 is the electron鈥檚 energy?

Short Answer

Expert verified

The energy is below the0.38eV.

Step by step solution

01

Given information 

We have given,

penetration depth =1nm

We have to find the how below its energy.

02

Simplify

We know the penetration depth is,

畏=h2蟺2m(Uo-E)(10-9m)=6.63脳10-342蟺2脳9.1脳10-31kg(U0-E)(U0-E)=(6.63脳10-34)24蟺2脳2脳9.1脳10-31脳10-18(U0-E)=0.38eV

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