If an alpha particle with energy 7.7 MeV is bombarded on a thin gold foil, the closest distance from
Автор: Arms Academy Digital
Загружено: 2026-02-25
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JEE MAIN 21 Jan 2026 (Morning Shift) Question Solution
If an alpha particle with energy 7.7 MeV is bombarded on a thin gold foil, the closest distance from nucleus it can reach is ____ m.
(Atomic number of gold =79 and 140=9×109 in SI units)
(1) 2.95×10-14
(2) 2.95×10-16
(3) 3.85×10-16
(4) 3.85×10-14
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