Vedclass
Class 12PhysicsDual Nature of Radiation and matterPhotoelectric Effect by Lenard and it's Observations
Easy

In a photo cell,the photo-electrons emission takes place

  • A
    After $10^{-1} \text{ s}$ on incident of light rays
  • B
    After $10^{-3} \text{ s}$ on incident of light rays
  • C
    After $10^{-6} \text{ s}$ on incident of light rays
  • D
    After $10^{-8} \text{ s}$ on incident of light rays
Share

Explore More

Browse All

Question Bank

12

All Subjects

Class 12 Questions

Class 12

Physics Questions

Chapter

Dual Nature of Radiation and matter

Subtopic

Photoelectric Effect by Lenard and it's Observations

Similar Questions

Which of the following graphs represents the variation of photoelectric current with the property of light shown on the $x-$axis?

MediumNEET 2025
View Solution

The minimum energy required to remove an electron from the surface of a metal is called:

Easy
View Solution

Light with a frequency of $1.5$ times the threshold frequency is incident on a photosensitive material. If the frequency is halved and the intensity is doubled,what will be the photoelectric current?

Medium
View Solution

The cathode of a photocell is changed such that the work function changes from $w_1$ to $w_2$ $(w_2 > w_1)$. If the saturation currents before and after the change are $I_1$ and $I_2$ respectively,and all other conditions (such as incident light intensity and frequency) remain unchanged,then (assuming $h\nu > w_2$):

Easy
View Solution

The value of threshold frequency depends on which of the following factors?

Medium
View Solution

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo