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De Broglie's Hypothesis

Which of the ...

Question

Which of the following has the largest de-broglie wavelength, given that all have equal velocity?

A

{C O}_{2}

molecule

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B

{N H}_{3}

molecule

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C

Electron

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D

Proton

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Solution

The correct option is D Electron
$λ = \frac{h}{m v}$

For same velocity,

$λ \propto 1 / m$

Electron has the least mass, so its wavelength is maximum.

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