Work function depends on:
Correct answer: C. Both metals and nature of surface
- A. Structure of metals only
- B. Nature of surface only
- C. Both metals and nature of surface
- D. Threshold frequency
Explanation
Work functions depend on the 'structure' and 'chemical composition of a surface'. For example, different crystallographic surfaces of the same metal or compound can have substantially different work functions. According to the formula work function = h x threshold frequency, work function depends on threshold frequency. However, threshold frequency itself depends on the nature of the material surface. So overall, work function depends on the nature and composition of a material surface.
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
The angular momentum of photon is _.
In photoelectric effect, the quantity that does NOT affect the work function is the
When a light source is kept at a distance of 50 cm from a photocell, the stopping potentialvalue is recorded as 0.5 V.If the distance between the light source and the photocell increases upto 80 cm, then thevalue of stopping potential will be
The charge and mass of a photon is:
The linear momentum of a 3 MeV photon is
Wave particle duality does not explain: