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The de -Brogile wavelength (lambda) for ...

The de -Brogile wavelength `(lambda)` for electron (e ), proton (p) and `He^(2+)` ion `(alpha)` are in the following order . Speedof e, p and `alpha` are the same .

A

`alpha gt p gt e`

B

`e gt p gt alpha`

C

`e gt alpha gt p`

D

`alpha lt p gt e`

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