Reshav Asked a Question
August 26, 2020 2:45 pmpts 30 pts
40 COS X-rays of CuK, (wavelength 154 pm) are difracted by a set of atomic planes in a crystal in the following manner. The separation ofthe layers in the crystals is 404 pm. Find the angle a along which the fist-order reflection will occur. (a) 79 (b) 450 (c) 11° (d) None of the above
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  • Lingareddy thankyou
    nλ=2d sinΘ 1×154=2×404sin Θ SinΘ=0.190 Θ=11
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  • Priyanshu kumar thankyou
    Option A is correct... alpha where first order reflection = 90-11=79°
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  • Priyanshu kumar
    Reshav use braggs equation you get
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    Priyanshu kumar
    Here lambda=154 pm given., d=404pm given ,n =1