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De Broglie's Hypothesis

If the follow...

Question

If the following matter waves travel with equal velocity, the longest wavelength is that of a/an:

A

electron

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B

proton

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C

neutron

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D

particle

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Solution

The correct option is B electron
$λ = \frac{h}{m v}$
$λ$ will be large if $m$ is small.

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