Light Emitting Diode (LED)

The special purpose diode operated / working under forward bias is/are

What is energy band gap $\left(E_B\right)$ for p-type and n-type semiconductor use to form a LED to produce a red light colour?

Why are LEDs important with respect to environmental pollution?

The band gap of the semiconductor ${\mathrm{GaAs}}_{0.6}{\mathrm{P}}_{0.4}$ is $1.9 \mathrm{eV}$. If this material is used to make a Light Emitting Diode $\left(\mathrm{LED}\right)$, the colour of the emerging light will appear

A light emitting diode (LED) has a voltage drop of $2 \mathrm{V}$ across it and passes a current of $10 \mathrm{mA}$ when it operates with a $6 \mathrm{V}$ battery through a limiting resistor $R.$ The value of $R$ (in $\Omega$) is:

What is LED? Draw the V-I characteristics of an LED?

Why LED consumes less power as compared to traditional lamps?

LED is a p-n junction diode which is _____ biased.

LED is a p-n junction diode which is

 Describe the working of Light Emitting diodes (LEDs).

LED display consists of a matrix of red, green, and _____ diodes.

White colour LED is present in an LED TV panel?

What is the use of an LED driver?

Why do we use light emitting diode (LEDs) in smartphones?

What is Light emitting diode?

Mention some advantages of LEDs over an incandescent lamp.

Mention various uses of LEDs.

Which of the characteristic curve are correct :

(A) Photo diode for ${\mathrm{I}}_2>{\mathrm{I}}_1$

(B) Solar cell

(C) L.E.D

Which of the following is not true in the uses of LEDs over conventional incandescent bulb.

The V-I characteristics of LED is similar to the characteristics of