Atoms NEET PYQ with Solutions – Practice Now

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Topic Question Set

Q 1 :
When an $α$ -particle of mass $m$ moving with velocity $v$ bombards on a heavy nucleus of charge Ze, its distance of closest approach from the nucleus depends on $m$ as [2016]

$\frac{1}{m^{2}}$
$m$
$\frac{1}{m}$
$\frac{1}{\sqrt{m}}$

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(3)

Distance of closest approach when an $α$ -particle of mass $m$ moving with velocity $v$ is bombarded on a heavy nucleus of charge Ze, is given by

$r_{0} = \frac{Z e^{2}}{2 π ε_{0} m v^{2}} ∴ r_{0} \propto \frac{1}{m}$

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