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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
What is the photoelectric effect?
How does photocurrent vary with the intensity of the incident light?
What is a photocell?
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When a light of frequency 9 × 1014 Hz is incident on a metal surface, photoelectrons are emitted with a maximum speed of 8 × 105 ms−1. Determine the threshold frequency of the surface.
When a 6000 Å light falls on the cathode of a photo cell, photoemission takes place. If a potential of 0.8 V is required to stop emission of electron, then determine the
- frequency of the light
- energy of the incident photon
- work function of the cathode material
- threshold frequency and
- net energy of the electron after it leaves the surface.
