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Which one of the following is associated...

Which one of the following is associated with a de Broglie wave of longer wavelength-a proton or an electron moving with same velocity ?

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`lamda=(h)/(mv)" "therefore (lamda_(p))/(lamda_(e))` Since `m_(p) gt m_(e)," "therefore lamda_(e) gt lamda_(p)`
Thus the electron is associated with a de Broglie wave of longer wavelength.
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