Calculate the wavelength of a wave associated with an electron of velocity 3 × 10⁸ m/s.
a) 1.227 × 10⁻⁹ m
b) 2.460 × 10⁻⁹ m
c) 4.920 × 10⁻⁹ m
d) 9.840 × 10⁻⁹ m