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De Broglie's Hypothesis

If particles ...

Question

If particles are moving with same velocity, then De-Broglie wavelength is maximum for :

A

proton

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B

α

particle

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C

neutron

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D

β

particle

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Solution

The correct option is D $β$ particle
$λ = \frac{h}{m v} \Rightarrow λ \propto \frac{1}{m}$

and since ,
$m_{α} > m_{p} = m_{N} > m_{β}$
hence,
De-Broglie wavelength is maximum for $β - p a r t i c l e s$ .

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