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The second order Bragg diffraction of X-...

The second order Bragg diffraction of X-rays with `lambda=1.0 Å` from a set of parallel planes in a metal occurs at an angle `60^(@)`. The distance between the scattering planes in the crystals is

A

0.575 A

B

1.00 A

C

2.00 A

D

1.15 A

Text Solution

Verified by Experts

The correct Answer is:
D
`2d sin theta = n lambda` or `2 xx d xx sin 60^(@) = 2 xx 1 A`
or `2 xx d xx 0.8660 = 2`
or `d = 1.15 A (sin 60^(@) = sqrt(3)//2` or 0.8660)
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