de - Broglie wavelength of a body of mass `1 kg` moving with velocity of `2000 m//s` is

Options

A. `3.32 xx 10^(-27) Å`
B. `1.5 xx 10^(7) Å`
C. `0.55 xx 10^(-22) Å`
D. None of these

Answer

A

Explanation

`lambda = (h)/(mv) = (6.6 xx 10^(-34))/(1 xx 2000)`
`= 3.3 xx 10^(-27) Å`