Physics · 2021
JEE Main · 25 July 2021, Shift 1 · Q6
What should be the order of arrangement of de-Broglie wavelength of electron (λ_e ), an α -particle (λ_α) and proton (λ_p ) given that all have the…
What should be the order of arrangement of de-Broglie wavelength of electron $\displaystyle \left(\lambda_{\mathrm{e}}\right)$, an $\displaystyle \alpha$-particle $\displaystyle \left(\lambda_\alpha\right)$ and proton $\displaystyle \left(\lambda_{\mathrm{p}}\right)$ given that all have the same kinetic energy ?
Official answer
(3)
$\displaystyle \lambda_e>\lambda_p>\lambda_\alpha$
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JEE Main 2021 Physics question, with the answer from NTA’s final answer key. Where our answers come from.