Fri January 20, 2012 By:

A proton and an alpha particle, both initially at rest, are (suitably) accelerated so as to have the same kinetic energy. What is the ratio of their de-Broglie wavelengths?

Expert Reply
Sat January 21, 2012
?1/?2=?4M1/M1       ( Mass of alpha particle is 4 times of mass of proton)
wavelength of proton(?1) is double of wavelength of alpha particle(?2).
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