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प्रश्न
The threshold wavelength for a metal surface whose photoelectric work function is 3.313 eV is __________.
विकल्प
4125 Å
3750 Å
6000 Å
2062.5 Å
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उत्तर
The threshold wavelength for a metal surface whose photoelectric work function is 3.313 eV is 3750 Å.
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संबंधित प्रश्न
When a metallic surface is illuminated with radiation of wavelength λ, the stopping potential is V. If the same surface is illuminated with radiation of wavelength 2λ, the stopping potential is `"V"/4`. The threshold wavelength for the metallic surface is
What is the photoelectric effect?
What is a photocell?
What is a surface barrier?
Explain how frequency of incident light varies with stopping potential.
Obtain Einstein’s photoelectric equation with the necessary explanation.
Give the construction and working of photo emissive cell.
List out the characteristics of photons.
How many photons per second emanate from a 50 mW laser of 640 nm?
Calculate the energies of the photons associated with the following radiation:
- violet light of 413 nm
- X-rays of 0.1 nm
- radio waves of 10 m
