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The first - order diffraction os X- rays...

The first `-` order diffraction os `X-` rays from a certain set of crystal planes occurs an angle of `11.8^(@)` from the planes. If the planes are `0.281 nm` apart, what is the wavelength of `X-` rays?

Text Solution

Verified by Experts

According to Bragg equation
`nlambda=2dsintheta`
`sintheta=sin11.8^(@)=0.2045,d=0.281nm,n=1`
`lambda=(2dsintheta)/(n)=(2xx(0.281nm)xx0.2045)/(1)=0.115nm`
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