An ultraviolet source produces a monochromatic beam of 200-nm ...

[waynest]

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? ( h = 1.055  10-34 J  s = 6.59  10-16 eV  s, c = 3.00  108 m/s)
  A) 10-6 eV B) 10-4 eV C) 10-5 eV D) 10-2 eV E) 10-3 eV

Question 2

If a 1.0-k resistor is connected in series with a 20-mH inductor, what is the impedance at 1.0 kHz?
 
  A) 1.0 k B) 1.1 k C) 0.13 k D) 0.13 M

[mistyjohnson]

Answer to Question 1

B

Answer to Question 2

A