What is the de broglie wavelength of a bullet of mass 0.040 kg travelling at the speed of `1.0 km.s ^(-1)`?

Explanation

Here, `m = 0.040 kg, v = 1.0 km.s^(-1) = 10^(3) m.s^(-1)`
`:. lamda = (h)/(mv) = (6.626 xx 10^(-34))/(0.040 xx 10^(3)) = 1.66 xx 10^(-35)m`