A ball of mass 0.5kg is moving with velocity 6.626 m/s

a-ball-of-mass-0-5kg-is-moving-with-velocity-6-626-m-s-whats

A ball of mass 0.5kg is moving with velocity 6.626 m/s. What’s the wavelength of that ball?
A. 1 x 10^-34 m
B. 2 x 10^-34 m
C. 2 x 10^-32 m
D. 2 x 10^-3 m
Correct option is B. 2 x 10^-34 m

Louis de Brogie gave the realation between momentum and wavelength as λ = h/p. Here h is Planck’s constant, whose value is 6.626 x 10^-34 J/s. Wavelength = h/mv = 2 x 10^-34 m (momentum p = mass m x velocity v).