CBSE Class 12-science Answered
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?
Asked by prernamehta | 20 Jan, 2012, 08:31: PM
Expert Answer
K.E.=P2/2M-------(1)
?=h/P--------(2)
?=h/?K.E.*2M-------(3)
?1/?2=?M2/?M1--------(4)
?1/?2=?4M1/M1 ( Mass of alpha particle is 4 times of mass of proton)
?1/?2=2
wavelength of proton(?1) is double of wavelength of alpha particle(?2).
Answered by | 21 Jan, 2012, 10:39: AM
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