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When radiation of wavelength lamda is in...

When radiation of wavelength `lamda` is incidenton a metallic surface, the stopping potential is 4.8V. If the same surface is illuminated with radiation of double the wavelength, the stopping potential becomes 1.6V. What is the threshold wavelength for the surface?

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The correct Answer is:
`4 lamda`
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CHHAYA PUBLICATION-QUANTUM THEORY-Exercise (Problem Set- I)
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  2. The stopping potential of copper is 2.72V for light of wavelength 1849...

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  3. When radiation of wavelength lamda is incidenton a metallic surface, t...

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  4. work function for electronic emission from sodium is 1.77 eV. What is ...

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  5. The work function for electron emission from a metal is 1.9 eV, and t...

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  6. The photoelectric threshold wavelength of radiation incident on its su...

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  7. The photoelectric work function of a metal is 1.2 eV. What will be the...

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  8. The photoelectric work function of a metal is 3800 Å. If an ultraviole...

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  9. Find out the photoelectric threshold wavelength of copper. Given work ...

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  10. Find the photoelectric threshold frequency of a metal is 6525 Å. What ...

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  11. A monochromatic source, emitting light of wavelength, 600 nm, has a po...

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  12. The threshold frequency of a metal is f(0). When the light of frequenc...

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  13. By how much would the stopping potential for given photosensitive surf...

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  14. Calculate the threshold frequency of photon for photoelectric emission...

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  15. Calculate the kinetic energy of photoelectrons in eV emitted on shinin...

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  16. Calculate the maximum kinetic energy of electrons emitted from a phot...

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  17. The de Broglie wavelength associated with a moving particle changes fr...

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  18. Determine the de Broglie wavelength of an electron moving with velocit...

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  19. For a moving electron, the de Broglie wavelength is 1 Å. What will be ...

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  20. If an electron is send through a potential difference of 60V, what wil...

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