Question

A body of mass `10 mg` is moving with a velocity of `100 ms^(-1)`. The wavelength of the de Broglie wave associated with it would be
A. `6.626xx10^(-7)`m
B. `6.626xx10^(-34)`m
C. `6.626xx10^(-4)`m
D. `6.626xx10^(-35)`m

Answer 1

Correct Answer - B
`lambda=h/(mv)=(6.626xx10^(-34)Js)/(0.01kgxx100ms^(-1))
= 6.626xx10^(-34)m`