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Physics · PYQ NEET UG 2016(1)
हिन्दीWhen an \( \alpha \)-particle of mass \( m \) moving with velocity \( v \) bombards on heavy nucleus of charge '\( Ze \)', its distance of closest approach from the nucleus depends on \( m \) as
Correct answer · Option 1
\( \frac{1}{m} \)
Explanation
Distance of closest approach \( r_0 = \frac{1}{4\pi\varepsilon_0} \frac{2Ze^2}{(1/2)mv^2} \). Thus, \( r_0 \propto \frac{1}{m} \).
