Question

Calculate the de brogile wavelength of an electron when moving with a speed of 72.73 m/s

Answer 1

de brogile wavelength =h/mv
                                       =6.6*10^-34 /(9.1*10^-31*72.3)
                                        =0.01*10^-3 m
where m=9.1*10^-31(mass of electron)