- Particle A of mass mA=2m moving along the x-axis with velocity v0 collides elastically with another particle B at rest having mass mB=3m . If both particles move along the x-axis after the collision, the change Δλ in de-Broglie wavelength of particle A, in terms of its de-Broglie wavelength ( λ0 ) before collision is :
a. Δλ=23λ0
b. Δλ=25λ0
c. Δλ=2λ0
d. Δλ=4λ0