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Why are alkali metals most suited as pho...

Why are alkali metals most suited as photosensitive materials?

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Alkali metals have small work function. So even with a radiation of small energy, electrons can be ejected out of their surface. That is why alkali metals are most suitable for photoelectric emission.
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BETTER CHOICE PUBLICATION-PARTICLE NATURE OF RADIATION-NUMERICAL PROBLEMS
  1. Why are alkali metals most suited as photosensitive materials?

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  2. Light of wavelength 5,500 overset @A falls on a sensitive plate with w...

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  3. When light of wavelength 400 nm is incident on the cathode of photocel...

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  4. The energy of photoelectrons emtted from a photo-snsitive plate is 1.5...

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  5. The work function for a certain metal is 4.2 eV. Will this metal give ...

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  6. The work function for a certain metal is 4.2 eV. Will this metal give ...

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  7. The work function for a certain metal is 4.2 eV. Will this metal give ...

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  8. Calculate the frequency associated with a photohn of energy 3.3 xx 10^...

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  9. Ligth of waveelength 2,200 overset @A falls on a metal with work funct...

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  10. Find the frequency of light which ejects electrons from a metal surfac...

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  11. A radiation of 5000 overset @ A is incident on metal surface whose wor...

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  12. Light of wavelength 5,500 overset @A falls on a sensitive plate with w...

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  13. Light of wavelength 5,500 overset @A falls on a sensitive plate with w...

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  14. Light of wavelength 5,500 overset @A falls on a sensitive plate with w...

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  15. Two metals X and Y have work functions 2eV and 5eV respectively. Which...

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  16. Calculate the work function of a metal in eV,if its threshold waveelng...

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  17. Visible light cannot eject photo electrons from copper metal, whose wo...

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  18. Find the number of photons wmitted er minute by 60 W lamp of moochrom...

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  19. A emtal has threshold waveelngth of 6,000 overset @A.Calculate thresh...

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  20. Light of wavelength 5,500 overset @A falls on a sensitive plate with w...

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  21. Calculate the frequency associated with a photon of energy 3.3 xx 10^(...

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