Physics · 2021
JEE Main · 18 March 2021, Shift 1 · Q8
A particle is travelling 4 times as fast as an electron. Assuming the ratio of de-Broglie wavelength of a particle to that of electron is 2: 1, the…
A particle is travelling $\displaystyle 4$ times as fast as an electron. Assuming the ratio of de-Broglie wavelength of a particle to that of electron is $\displaystyle 2$ : $\displaystyle 1$, the mass of the particle is :
Official answer
(4)
$\displaystyle \frac{1}{8}$ times the mass of $\displaystyle \mathrm{e}^{-}$
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JEE Main 2021 Physics question, with the answer from NTA’s final answer key. Where our answers come from.