Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Medical
  • In a triode, cathode, grid and plate are at respectively.

In a triode, cathode, grid and plate are at \mathrm{0,-2\: and\: 80V} respectively. The electrons are emitted from the cathode with energy \mathrm{3\:eV}. The energy of the electron reaching the plate is

Option: 1

\mathrm{77\: eV}


Option: 2

\mathrm{85\: eV}


Option: 3

\mathrm{81\: eV}


Option: 4

\mathrm{83\: eV}


Answers (1)

best_answer

There is a loss of kinetic energy of 2 \mathrm{eV} from filament to grid. The energy of the electron after passing through the grid will be \mathrm{3-2=1 \mathrm{eV}}

The potential difference between plate and grid is \mathrm{80-(-2)=82 \mathrm{~V}}. The electron will gain energy \mathrm{82 \mathrm{eV}} from the grid to the plate. The energy of electron reaching the plate \mathrm{=1+82=83 \mathrm{eV}}

Hence option 4 is correct.

Posted by

manish painkra

View full answer

NEET 2024 Most scoring concepts

    Just Study 32% of the NEET syllabus and Score up to 100% marks

Similar Questions

Trending Articles/News

anam-khan

NEET cut-off trends for MBBS in Tamil Nadu government, private medical colleges; counselling underway
anam-khan

NEET UG result 2025 withheld? Reasons, implications; here’s what to do
anam-khan

NEET UG Result 2025: Allen Institute sweeps rankings with 4 in top 10, 39 in top 100

Latest Question