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In Davisson-Germer experiment, an electr...

In Davisson-Germer experiment, an electron beam of energy 60 eV is incident normally on a crystal surface. The maximum intensity is obtained at an angle of `60^(@)` from the direction of incident beam, then the inter atomic distance in the crystal lattice will be :

A

`1.83Å`

B

`3.6 Å`

C

`18Å`

D

`0.18Å`

Text Solution

Verified by Experts

The correct Answer is:
A
`lambda= d sin phi=(12*27)/(sqrt(V))`
`d=(12*27xx2)/(sqrt(3xx60))=1*83Å`
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