Frequency below which no electrons are emitted from metal surface is:
Correct answer: D. threshold frequency
- A. minimum frequency
- B. angular frequency
- C. maximum frequency
- D. threshold frequency
Explanation
There is a minimum frequency below which no electrons are emitted however intense the light may be. This minimum frequency is called threshold frequency.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Photons and the Particle Model of Light
The particle model treats light as photons with energy E equals hf and momentum related to wavelength. Questions involve the photoelectric effect, work function, threshold frequency, stopping potential and photon energy, while distinguishing particle behaviour from the wave description of interference and diffraction.
Practise Dawn of Modern Physics
739 free Dawn of Modern Physics MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Photons and the Particle Model of Light questions
Maximum kinetic energy of photoelectron is_frequency of incident radiation.
The absorbed energy of incident photons is used in two ways: (1) Work Function: part of energy is used to free the electron from metal surface and (Ⅱ) Remaining part is converted to
The number of photoelectrons ejected from a metal when light falls on its surface is directly proportional to:
The photoelectric threshold frequency depends upon:
The Einstein's photoelectric equation K.Emax=hf - hfo is valid for:
A device whose working is based upon photoelectric effect is: