why does photoelectric emission occur only when there is a certain threshold frequency of incident radiation?

According to the particle theory of light, hf=φ+KEmax, so along with the minimum amount of energy required, there is a minimum frequency as well, φ= hfo. Thus, the incident photon must have a frequency higher than fo for photoelectric emmision to occur.

NP
Answered by Nikolas P. Physics tutor

2647 Views

See similar Physics A Level tutors

Related Physics A Level answers

All answers ▸

From the definition of the decay constant for nuclear decay, derive the exponential decay equation.


An electron falling from one energy level to another emits a photon of wavelength 550nm. What is the difference between the two energy levels?


How is a particle moving in circular motion accelerating but not varying speed?


Define a "Vector Quantity" and list 2 examples.


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences