Question

A particle of mass 4m at rest decays into two particle of masses m and 3 m having non- zero velocities . The ration of the de Broglie wavelength of the particle 1 and 2 is :

• A. $\frac{1}{2}$
• B. $\frac{1}{4}$
• C. 2
• D. 1

Answer 1

Answer: (D)

1

Answer 2

: According to law of conservation of linear momentum , two particles will have equal and opposite momentum

The de Broglie wavelength is given by

$\lambda = \frac{h}{p}\therefore\frac{\lambda_{1}}{\lambda_{2}} = 1$