Q130 / 180 · AIIMS 2005 · Physics

Assertion : A diode lasers are used as optical sources in optical communication. Reason : Diode lasers consume less energy.

  • A
    If both assertion and reason are true and reason is the correct explanation of assertion
  • Correct answer
    B
    If both assertion and reason are true but reason is not the correct explanation of assertion
  • C
    If assertion is true but reason is false
  • D
    If both assertion and reason are false.

Solution

In optical communication, a semiconductor bases laser (diode laser) is used to generate analog signals or digital pulses for transmission through optical fibres. The advantages of diode lasers are their small size and low power input.

Hence, the correct answer is option: 'B'.

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