Home › Bihar Board Class 12 (Science) › Physics › Atoms › Compared with the sum of nuclear and alpha radii…
Compared with the sum of nuclear and alpha radii, closest approach is?
AExactly equal
BSlightly smaller
CZero, as they touch
DConsiderably larger
Answer & Solution
Correct answer: D. Considerably larger
The 30 fm closest approach far exceeds the combined radii, so the alpha particle turns back without touching the nucleus.
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