Similar to electron diffraction, neutron diffraction microscope is also used for the determination of the structure of molecules. If the wavelength used here is `800 p m`, calculate the characteristic velocity associated with the neutron.

Explanation

Mass of neutron `= 1.675 xx 10^(-27) kg`
`lamda = (h)/(mv) or v = (h)/(m xx lamda) = (6.626 xx 10^(-34) kg m^(2) s^(-1))/(1.675 xx 10^(-27)kg xx (800 xx 10^(-12) m)) = 4.94 xx 10^(4) ms^(-1)`