Question:
Relativistic corrections become necessary when the expression for the kinetic energy 1/2 mv2 , becomes comparable with mc2, where m is the mass of the particle. At what de Broglie wavelength will relativistic corrections become important for an electron?
(a) λ =10nm
(b) λ =10–1nm
(c) λ =10–4nm
(d) λ =10–6nm
Solution:
The correct answers are
(c) λ =10–4nm
(d) λ =10–6nm