What is the full form of LED?

  1. Laser Emitting Diode
  2. Light Emitting Diode
  3. Liquid Emitting Diode
  4. Laser Emitting Display

Answer (Detailed Solution Below)

Option 2 : Light Emitting Diode
Free
UPSC NDA 01/2025 General Ability Full (GAT) Full Mock Test
6 K Users
150 Questions 600 Marks 150 Mins

Detailed Solution

Download Solution PDF

CONCEPT:

  • Light Emitting Diode or LED: It is a heavily doped p-n junction diode.
    • Under forward-bias LED emits spontaneous radiation.
    • These diodes are encapsulated with a transparent cover so that emitted light can come out.

F1 J.S 30.3.20 Pallavi D8  LED

EXPLANATION:

  • Light Emitting Diode is the full form of LED.
  • So the correct answer is option 2.
Latest NDA Updates

Last updated on Jul 8, 2025

->UPSC NDA Application Correction Window is open from 7th July to 9th July 2025.

->UPSC had extended the UPSC NDA 2 Registration Date till 20th June 2025.

-> A total of 406 vacancies have been announced for NDA 2 Exam 2025.

->The NDA exam date 2025 has been announced. The written examination will be held on 14th September 2025.

-> The selection process for the NDA exam includes a Written Exam and SSB Interview.

-> Candidates who get successful selection under UPSC NDA will get a salary range between Rs. 15,600 to Rs. 39,100. 

-> Candidates must go through the NDA previous year question paper. Attempting the NDA mock test is also essential. 

Get Free Access Now
Hot Links: teen patti master downloadable content teen patti real money app teen patti earning app teen patti dhani