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The LED emits light of a particular colour because
  • a)
    It is fabricated from a fluorescent material
  • b)
    Transition between energy levels of the carriers takes place while crossing the p-n junction
  • c)
    Heat generated in the diode is converted into light
  • d)
    The band gap of the semiconductor material used in the fabrication of the diode is equal to the energy hν of the light photon
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
The LED emits light of a particular colour becausea)It is fabricated f...
LEDs are fabricated using direct bandgap semiconductors.In which, when electron transfers from conductor band to valence band and recombines with the holes the energy difference between the both bandsget converted in to light with frequency ‘ν’, it is related with energy as,
E = hν, where h is Planck’s constant.
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Most Upvoted Answer
The LED emits light of a particular colour becausea)It is fabricated f...
)Transition between energy levels of the carriers takes place while crossing the p-n junction.
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The LED emits light of a particular colour becausea)It is fabricated from a fluorescent materialb)Transition between energy levels of the carriers takes place while crossing the p-n junctionc)Heat generated in the diode is converted into lightd)The band gap of the semiconductor material used in the fabrication of the diode is equal to the energy hν of the light photonCorrect answer is option 'D'. Can you explain this answer?
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The LED emits light of a particular colour becausea)It is fabricated from a fluorescent materialb)Transition between energy levels of the carriers takes place while crossing the p-n junctionc)Heat generated in the diode is converted into lightd)The band gap of the semiconductor material used in the fabrication of the diode is equal to the energy hν of the light photonCorrect answer is option 'D'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about The LED emits light of a particular colour becausea)It is fabricated from a fluorescent materialb)Transition between energy levels of the carriers takes place while crossing the p-n junctionc)Heat generated in the diode is converted into lightd)The band gap of the semiconductor material used in the fabrication of the diode is equal to the energy hν of the light photonCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The LED emits light of a particular colour becausea)It is fabricated from a fluorescent materialb)Transition between energy levels of the carriers takes place while crossing the p-n junctionc)Heat generated in the diode is converted into lightd)The band gap of the semiconductor material used in the fabrication of the diode is equal to the energy hν of the light photonCorrect answer is option 'D'. Can you explain this answer?.
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