Q164
General SciencePhysics
What is the source of UV radiation?
- a.Hydrogen gas discharge lamp
- b.RF oscillator
- c.Klystron oscillator
- d.Nernst filament
Answer: (A) Hydrogen gas discharge lamp
Hydrogen (or deuterium) discharge lamps give a continuous ultraviolet spectrum and are the standard UV source in spectrophotometers. A Nernst filament is an infrared source, a klystron produces microwaves, and an RF oscillator produces radio waves.