The minimum value of electric field required to pull out electrons from a metal is approximately . . . . . . $V$/cm.
- A$10^9$
- B$10^6$
- C$10^{10}$
- D$10^8$
Explore More
Similar Questions
Which of the following is not a property of cathode rays?
In an electron gun,the control grid is kept at a negative potential with respect to the cathode because...
Easy
View SolutionCathode rays are
Easy
View SolutionWhen subjected to a transverse electric field,cathode rays move
Easy
View SolutionWhich of the following has the highest specific charge?
Easy
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo