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JEE ADVANCE 2010
paper 1
Question
An $\alpha$ - particle and a proton are accelerated from rest by a potential difference of 100 V . After this, their de Broglie wavelengths are $\lambda_\alpha$ and $\lambda_{\mathrm{p}}$ respectively. The ratio $\frac{\lambda_{\mathrm{p}}}{\lambda_\alpha}$, to the nearest integer, is
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