Home PYQs UPPSC UPPSC MCQs Prelims 2009 (GS Paper I)

Question

Which of the following laser types is used in a laser printer?

  1. Dye laser
  2. Semiconductor laser
  3. Excimer laser
  4. Gas laser

Answer:

Option B: Semiconductor laser

Detailed Solution:

The correct answer is “Semiconductor laser”.

Semiconductor lasers, also known as laser diodes or injection lasers, are the most common type of laser used in laser printers.