Thickness of the foil of gold used in \( \alpha \)-particle scattering experiment is....

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Question Thickness of the foil of gold used in \( \alpha \)-particle scattering experiment is
(A)  \( 2.1 \times 10^{-7} \mathrm{~m} \)
(B) \( 3.5 \times 10^{-5} \mathrm{~m} \)
(C) \( 2.1 \times 10^{-9} \mathrm{~m} \)
(D) \( 3.5 \times 10^{-6} \mathrm{~m} \)📲PW App Link - https://bit.ly/YTAI_PWAP 🌐PW Website - https://www.pw.live



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