A proton and an electron have same kinetic energy. Which one has greater de-Broglie wavelength and why ?

A proton and an electron have same kinetic energy. Which one has great

1.	A proton and an electron have same kinetic energy. Which one has greater de-Broglie wavelength and why ?
Answer» An electron has the larger wavelength. Reason : de-Broglie wavelength in terms of kinetic energy is `lamda=(h)/(sqrt(2mE_(k)))alpha=(1)/(sqrt(m))` for the same kinetic energy. As an electron has a smaller mass than a proton, an electron an electron has larger de-Broglie wavelength than a proton for the same kinetic energy.

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A proton and an electron have same kinetic energy. Which one has greater de-Broglie wavelength and why ?

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