Nucleus finite Broglie wavelength |NUCLEARPHYSICSJEEMain2019

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JEE MAIN 2019

08-04-2019 S2

Question

A nucleus $A$, with a finite de-Broglie wavelength $\lambda_A$, 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 $B$. The de-Broglie wavelength $\lambda_B$ and $\lambda_C$ of $B$ and $C$ are respectively:

Select the correct option:

A

$2 \lambda_{\mathrm{A}}, \lambda_{\mathrm{A}}$

B

$\lambda_{\mathrm{A}}, \frac{\lambda_{\mathrm{A}}}{2}$

C

$\frac{\lambda_{\mathrm{A}}}{2}, \lambda_{\mathrm{A}}$

D

$\lambda_{\mathrm{A}}, 2 \lambda_{\mathrm{A}}$

✓ Correct! Well done.

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