Physics

Physics

Problem

Electrons accelerated through 54 V strike a nickel crystal whose interplanar spacing is 0.091 nm. For the first-order (n = 1) maximum, the glancing angle θ with the crystal plane is nearest to a) 45∘45^{\circ} b) 67∘67^{\circ} c) 30∘30^{\circ} d) 80∘80^{\circ}

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