Physics - Modern Physics Question with Solution | TestHub

A particle of mass $M$, at rest decays into two masses $m_1$ and $m_2$ with non-zero velocities. The ratio of de Broglie wavelengths of the particles $\frac{{\lambda }_1}{{\lambda }_2}$ is $\frac{m}{n}$, then the minimum value of $m+n$ is