A proton and an electron are both travelling at the same speed. What can we conclude about their de Broglie wavelengths?

Asked by  | 11th Oct, 2013, 08:04: PM

Expert Answer:

Mass of an electron =9.1 x 10 -31 kg
Mass of a proton =1.67 x 10 ?27 kg
Now de Broglie wavelength is given as
Since speed(v) is same for both the particles ? is inversely proportional to mass.
Since mass of proton is more de Broglie wavelength of the proton will be shorter than that of the electron.
Hence option c is correct and not d.

Answered by Vaibhav Chavan | 14th Oct, 2013, 02:49: PM

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