Which of the following statements is true abo | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) An $LED$ (Light Emitting Diode) is a $p-n$ junction diode that emits light when forward biased.Key characteristics of LEDs include:$1$. They opera

Vedclass · Accepted Answer

Fast on-off switching

Vedclass · Answer

(D) An $LED$ (Light Emitting Diode) is a $p-n$ junction diode that emits light when forward biased.Key characteristics of LEDs include:$1$. They operate at low voltages compared to incandescent bulbs.$2$. They do not require any warm-up time.$3$. They have very fast on-off switching capabilities,making them ideal for high-speed communication and display technologies.$4$. The bandwidth of light emitted is typically narrow,not $4000 \ Å - 7000 \ Å$ (which covers the entire visible spectrum).Therefore,the correct statement is that they have fast on-off switching.

Which of the following statements is true about LEDs?

Similar Questions

$A$ $p-n$ photodiode is fabricated from a semiconductor with a band gap of $2.5 \, eV$. It can detect a signal of wavelength:

In a photodiode,the value of the $emf$ produced by a monochromatic light beam is directly proportional to

When an $LED$ is manufactured by using aluminium gallium arsenide $(AlGaAs)$,it emits:

With increasing biasing voltage of a photodiode,the photocurrent magnitude

In a $PN$ junction photocell,the value of the photo-electromotive force produced by monochromatic light is proportional to

Vedclass Test Series

Exam Paper Generator

Online Exam Module