A particle of mass 4 m at rest decays into two particles of mass m and 3m having non-zero velocities. The ratio of the de Broglie wavelengths of the particles 1 and 2 is:
Answer & explanation
Correct answer: option 4
According to law of conservation of linear momentum, two particles will have equal and opposite momentum.
The de Broglie wavelength is given by
$λ=\frac{h}{p}$ $∴\frac{λ_1}{λ_2}=1$