Physics · 2019
JEE Main · 8 April 2019, Shift 2 · Q25
A nucleus A, with a finite de-broglie wavelength λ_A, undergoes spontaneous fission into two nuclei B and C of equal mass. B flies in the same…
A nucleus A, with a finite de-broglie wavelength $\displaystyle \lambda_{\mathrm{A}}$, undergoes spontaneous fission into two nuclei B and C of equal mass. B flies in the same direction as that of A, while C flies in the opposite direction with a velocity equal to half of that of $\displaystyle B$. The de-Broglie wavelengths $\displaystyle \lambda_{\mathrm{B}}$ and $\displaystyle \lambda_{\mathrm{C}}$ of B and $\displaystyle C$ are respectively :
Official answer
(3)
$\displaystyle \frac{\lambda_{\mathrm{A}}}{2}, \lambda_{\mathrm{A}}$
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JEE Main 2019 Physics question, with the answer from NTA’s final answer key. Where our answers come from.