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An alpha-particle and a proton are acce...

An `alpha`-particle and a proton are accelerated from rest by the same potential . Find the ratio of their de Broglie wavelengths .

Text Solution

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The correct Answer is:
B
`lambda = (h)/(sqrt(2qVm)) rArr lambda prop (1)/(sqrt(qm))`
`(lambda_p)/(lambda_d) = sqrt((qm)_d)/((qm)_p) = sqrt((1xx2/(1xx1)) = sqrt2`
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