The Wavelength of Light Emitted from a Particular Red Diode

Multiple Choice

The wavelength of light emitted from a particular red diode laser is 651 nm.What is the wavelength in meters?

A) 6.51 × 10¹¹ m
B) 6.51 × 10^-2 m
C) 6.51 × 10^-4 m
D) 6.51 × 10^-7 m
E) 6.51 × 10^-9 m