The De Broglie Wavelength of an Electron Is 380 Nm

Multiple Choice

The de Broglie wavelength of an electron is 380 nm. What is the speed of this electron?

A) 2.04 × 10³ m/s
B) 3.83 × 10³ m/s
C) 1.92 × 10³ m/s
D) 4.12 × 10³ m/s
E) 5.22 × 10³ m/s