Which of the following results is not true about the photoelectric effect?
- AThe electrons are ejected from the metal surface as soon as the beam of light strikes the surface.
- BThe number of electrons ejected is proportional to the intensity or brightness of light.
- CThere is a time lag between the striking of the light beam and the ejection of electrons from the metal surface.
- DFor each metal, there is a characteristic minimum frequency below which the photoelectric effect is not observed.
Explore More
Similar Questions
The ionization potential of hydrogen atom is $13.6 \ eV$. The energy required to remove an electron from the $n = 2$ state of hydrogen atom is : ............ $eV$
Medium
View SolutionThe ratio of the difference between the $1^{st}$ and $2^{nd}$ Bohr orbits energy to the difference between the $2^{nd}$ and $3^{rd}$ Bohr orbits energy is:
Medium
View SolutionThe energy of an electron in the excited hydrogen atom is $-3.4 \ eV$. Then according to Bohr's theory,the angular momentum of the electron in that excited state is ($h=$ Planck's constant).
In Bohr's atomic model,the radius $(r)$ and energy $(E)$ of an orbit $(n)$ are related as:
Medium
View Solution$A$ quantum will have more energy if :
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