An \( \alpha \)-particle of energy \( 3 \mathrm{MeV} \) is scattered through \( 180^{\circ} \) b....

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Question An \( \alpha \)-particle of energy \( 3 \mathrm{MeV} \) is scattered through \( 180^{\circ} \) by a fixed gold nucleus \( (z=79) \). The distance of closest approach is:
(A) \( 5.2 \times 10^{-14} \mathrm{~m} \)
(B) \( 7.5 \times 10^{-14} \mathrm{~m} \)
(C) \( 5.2 \times 10^{-10} \mathrm{~m} \)
(D) \( 9.5 \times 10^{-14} \mathrm{~m} \)📲PW App Link - https://bit.ly/YTAI_PWAP 🌐PW Website - https://www.pw.live



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