Problem

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

\theta_1/\theta_2

is (JEE 1999) a.

m_1/m_2

m_2/m_1

c. 1 d.

\sqrt{m_2}/\sqrt{m_1}