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IMSO 2011 Science International – Theory I Question 7

IMSO Science · IMSO 2011 Science International – Theory I

Question 7

Some governments around the world have passed measures to phase out tungsten filament bulbs for lighting purposes. The aim is to encourage the use of more energy-efficient lighting alternatives and minimize greenhouse gas emissions. A tungsten filament refers generally to
  1. compact fluorescent lamp.
  2. fluorescent lamp.
  3. incandescent lamp.
  4. light emitting diode lamp.