Question

A particle of mass M at rest decays into two particles of masses $m_1$ and $m_2$ having non zero velocities. The ratio of the de Broglie wavelengths of the particles, ${\lambda }_1/{\lambda }_2$ is?

Answer 1

De Broglie wavelengths is given by $\lambda =\frac{h}{p}$

where $h$ is planks constant and $p$ is momentum

Now mass M at rest initially from the momentum of conservation

$p_1=p_2$

Since the momentum is equal, the de broglie wavelength is equal

Ans $1$