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Calculate lambda of X-rays which give a ...

Calculate `lambda` of X-rays which give a diffraction angle `2 theta = 16.8^(@)` for crystal, if the interplanar distance in the crystal is `0.2 nm` and that only for the first-order diffraction is observed. Given `sin 8.40^(@) = 0.146`.

Text Solution

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`lambda = (2d sin theta)/(n) = (2 xx 0.20 xx 0.146)/(1)` , `("since"theta = 8.40^(@))`
`= 0.584 nm`
`= 5.84 xx 10^(-11)m`
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