Question

Calculate the wavelength of an electron moving with a velocity of 2.05 x 10⁷ ms^-1.

Answer 1

Velocity of electron, v = 2.05 x 10⁷ ms^-1

Wavelength of the electron, λ = ?

λ = h/mv

or, λ = {6.626 x 10^-34 Js}/{9.1 x 10^-31 kg x 2.05 x 10⁷ ms^-1}

= 3.55 x 10^-11 m