Dual behaviour of matter proposed by de-Broglie led to the discovery

1.	Dual behaviour of matter proposed by de-Broglie led to the discovery of electron microscope often used for the highly magnified images of biological molecules and other types of material. If the velocity of the electron in this microscope is 1.6 x 106 ms-1, calculate de Broglie wavelength associated with this electron.
Answer» λ = h/mv = {6.626 x 10^-34 Js}/{(9.1 x 10^-31 kg)(1.6 x 10⁶ ms^-1)} = {6.626 x 10^-9}/{9.1 x 1.6} = 400 pm

Dual behaviour of matter proposed by de-Broglie led to the discovery of electron microscope often used for the highly magnified images of biological molecules and other types of material. If the velocity of the electron in this microscope is 1.6 x 106 ms-1, calculate de Broglie wavelength associated with this electron.

Answer»

λ = h/mv = {6.626 x 10^-34 Js}/{(9.1 x 10^-31 kg)(1.6 x 10⁶ ms^-1)}

= {6.626 x 10^-9}/{9.1 x 1.6} = 400 pm