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

An `alpha`- particle and a proton are accelerated from rest by a potential difference of `100 V` After this their de Broglie wavelength are `lambda_(alpha) and lambda_(p)` respectively The ratio `(lambda_(p))/ lambda_(alpha)` , to the nearest integer is

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The correct Answer is:
`3`
`h/lambda=p=sqrt(2mqV)`
`implies lambda_(P)/lambda_(alpha)=sqrt((m_(alpha)q_(alpha))/(m_(P)q_(P)))=sqrt(4xx2)=sqrt(8)~~3`
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