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An electron and alpha particle have the ...

An electron and alpha particle have the same de-Broglie wavelength associated with them. How are their kinetic energies related to each other ?

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Verified by Experts

As `lamda=h/p=h/sqrt(2mK)`
Here, K is kinetic energy.
`K=h^2/(2mlamda^2)`
For same`lamda` , K is inversely proportional to mass Hence , electron having smaller mass will have more kinetic energy than proton.
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MODERN PUBLICATION-DUAL NATURE OF RADIATION AND MATTER -Revision Exercises (Very Short Answer Questions)
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  12. Why are alkali metal surfaces most suited as photo-sensitive surfaces?

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