A) \[\sin \theta =0.05\]rad
B) \[\cos \theta =0.02\]rad
C) \[\sin \theta =0.7\]rad
D) \[\tan \theta =0.7\]rad
Correct Answer: A
Solution :
The Bragg's equation is\[2d\sin \theta =n\lambda \]where, a =1, 2, 3, ......and \[\theta =\] scattering angle \[\Rightarrow \]\[\sin \theta =\frac{n\lambda }{2d}\] Putting, n = 1 for minimum angle of scattering \[\sin \theta =\frac{1\times 0.3\times {{10}^{-10}}}{2\times 03\times {{10}^{-9}}}=0.05\]rad
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