An Ultraviolet Source Produces a Monochromatic Beam of 200-Nm Light

Multiple Choice

An ultraviolet source produces a monochromatic beam of 200-nm light.A shutter allows a pulse to pass that is 10,000 wavelengths long.The uncertainty in the energy of a photon in this pulse is closest to which of the following? , c = 3.00 × 10⁸ m/s)

A) 5 × 10^-7 eV
B) 5 × 10^-6 eV
C) 5 × 10^-5 eV
D) 5 × 10^-4 eV
E) 5 × 10^-3 eV