Home
Class 12
PHYSICS
What is a light emitting diode? Write an...

What is a light emitting diode? Write an advantage of using it over conventional low power lamps.

Text Solution

Verified by Experts

Light emitting diode : It is a heavily doped P-n junction which under forward bias emits spontaneous radiation. (p-n junction diode which emits light when forward) Advantages : (i) Low operational voltage and less power. (ii) Fast action and no warm- up time required. (iii) The bandwidth of emitted light is 100 Å to 500 Å or in other words it is nearly (but not exactly) monochromatic. (iv) Long life and ruggedness. (v) Fast on-off switching capability
Promotional Banner

Topper's Solved these Questions

  • SEMI-CONDUCTORS ELECTRONICS

    OSWAAL PUBLICATION|Exercise TOPIC -2 SEMICONDUCTOR DIODES AND THEIR APPLICATIONS (SHORT ANSWER TYPE QUESTIONS- II)|9 Videos

  • SEMI-CONDUCTORS ELECTRONICS

    OSWAAL PUBLICATION|Exercise TOPIC -2 SEMICONDUCTOR DIODES AND THEIR APPLICATIONS (LONG ANSWER TYPE QUESTIONS-|6 Videos

  • SEMI-CONDUCTORS ELECTRONICS

    OSWAAL PUBLICATION|Exercise TOPIC -2 SEMICONDUCTOR DIODES AND THEIR APPLICATIONS (VERY SHORT ANSWER TYPE QUESTIONS)|6 Videos

  • Sample Paper 8

    OSWAAL PUBLICATION|Exercise Exercise|37 Videos

  • SOLVED PAPER (II PUC JULY 2016)

    OSWAAL PUBLICATION|Exercise PART D|11 Videos

Similar Questions

Explore conceptually related problems

Write any one advantage of light emiting diode.

What is hydrogenation of oils ? Write two advantage of its.

Write any two advantages of Light Emitting Diode (LED) over conventional incandescent low power lamps .