• Call Us : 03082533000 (WhatsApp)
  • Email Us : TestPointpk.com@gmail.com
Testpoint Whatsapp group Testpoint Whatsapp group
Sticky Note
LED stands for _____?
ایل ای ڈی کا مطلب ہے؟
  1. Light Emitting Diode
  2. Laser Emitting Device
  3. Low Energy Device
  4. Liquid Emitting Display
Explanation
  • LED (Light Emitting Diode) is a semiconductor device that emits light when electric current passes through it.
  • It is widely used in lighting, displays, electronic indicators, and screens.

Additional information:

  • Energy efficiency: Up to 90% more efficient than traditional bulbs
    First discovery: H. J. Round – 1907
    Early research: Oleg Losev – 1927
    Practical LED development: James R. Biard – 1961
    First commercial production: October 1962 (Nick Holonyak)

    Last verified on 12-03-2026

    Related MCQs

    What does B2C stand for in e-commerce?
    ای کامرس میں بی ٹو سی کا کیا مطلب ہے؟
    1. Buyer to Customer
    2. Business to Customer
    3. Business to Consumer
    4. None of these
    اس سوال کو وضاحت کے ساتھ پڑھیں
    CPU stands for?
    سی پی یو کا مطلب کیا ہے؟
    1. Central Processing Unit
    2. Central Procedural Unit
    3. Central Processing Unique
    4. None of these
    اس سوال کو وضاحت کے ساتھ پڑھیں
    URL has an abbreviation of?
    یو آر ایل کا مکمل نام کیا ہے؟
    1. Uniform router locator
    2. Uniform resource locator
    3. Universal resource locator
    4. Uniform routing locator
    اس سوال کو وضاحت کے ساتھ پڑھیں
    What does HTTP stands for in the context of WWW?
    ایچ ٹی ٹی پی کا مطلب ہے؟
    1. Hypertext Transfer Protocol
    2. Hypertext Transfer Protection
    3. Hyper Transfer Protocol
    4. None of these
    اس سوال کو وضاحت کے ساتھ پڑھیں
    In computer, SDS stands for?
    کمپیوٹر میں ایس ڈی ایس کا مطلب کیا ہے؟
    1. Software Defined Storage
    2. Software Data System
    3. System Data Software
    4. None of these
    اس سوال کو وضاحت کے ساتھ پڑھیں
    Test Point Whatsapp Channel

    All Rights Reserved © TestPointpk.com