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For a crystal, the angle of diffraction ...

For a crystal, the angle of diffraction (20) is `90^@` and the second order line has a d value of `2.28 A^@`. The wavelength (in `A^@`) of X-rays used for Bragg's diffraction is

A

`1.61Å`

B

`1.14Å`

C

`2.28Å`

D

`2.0Å`

Text Solution

Verified by Experts

The correct Answer is:
A
`n lambda=2d sin theta(n=2)`
`lambda=d sin theta" "2 theta=90^(@)`
`=1.61Å" "theta=45^(@),d=2.28Å`
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