Home
Class 12
PHYSICS
A LED emits visible white light when its...

A LED emits visible white light when its

A

junction is reversed biased

B

depletion layer widens

C

holes and electrons recombine

D

junction becomes hot

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • QUESTION BANK 2021

    NAVNEET PUBLICATION - MAHARASHTRA BOARD|Exercise Semiconductors Devices (Very Short Answer (VSA) ( 1 MARK Each ) )|8 Videos

  • QUESTION BANK 2021

    NAVNEET PUBLICATION - MAHARASHTRA BOARD|Exercise Semiconductors Devices (Short Answer I (SA1) ( 2 MARKS Each ) )|7 Videos

  • QUESTION BANK 2021

    NAVNEET PUBLICATION - MAHARASHTRA BOARD|Exercise Structure of Atoms and Nuclei (Long Answer ( LA) ( 4 marks Each) )|3 Videos

  • MULTIPLE CHOICE QUESTIONS

    NAVNEET PUBLICATION - MAHARASHTRA BOARD|Exercise Communication Systems|6 Videos

  • SHORT ANSWER QUESTIONS

    NAVNEET PUBLICATION - MAHARASHTRA BOARD|Exercise Assignments|3 Videos

Similar Questions

Explore conceptually related problems

When irradiated with UV - light, nanoparticles emit visible light. The wavelength of this visible light is ___________.

Assertion : A tube light emits white light. Reason : Emission of light in a tube takes place at a very high temperature.

In LED visible light is produced by

Assertion: LED is used in display units because it emits light when current passes through it. Reason: In LED, electrons comes from conduction band to valence band when it emits energy.

There are two source of light, each emitting with a power fo 100W , One emits X -rays of wavelength 1nm and the other visible light at 5400nm . Find the ratio of number of photons of X-rays to the photos of visible light of the given wavelength?