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The work function of a metallic surface ...

The work function of a metallic surface is 2.5 eV. Ultraviolet light of wavelength 2000Å is allowed to be incident on the metallic surface. Calculate
Stopping potential. (Given Planck's constant h =`6.63 xx 10^(-34) J-s`, electronic charge e = `1.6 xx 10^(-19)` C, electron mass m = `9.1 xx 10^( -31)` kg

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BINA LIBRARY-DUAL NATURE OF MATTER AND RADIATION-EXERCISE
  1. The work function of a metallic surface is 2.5 eV. Ultraviolet light o...

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  2. What is photoelectric emission?

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  3. What is secondary emission?

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  4. What is meant by work function?

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  5. Does work function depend on the frequency of incident radiation?

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  6. Define one electron volt.

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  7. An electron is accelerated through a potential difference of 1000 V. W...

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  8. Find the dimestion of Planck's constant.

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  9. What is thresold frequency?

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  10. What is cut-off or stopping potential?

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  11. What is the momentum of a photon of frequency f and wavelength lamb...

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  12. What is rest mass of photon?

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  13. On what factor does the energy carried by a photon of light depend?

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  14. If maximum K.E. of electron emitted by a photo cell is 4 eV, what is t...

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  15. In what way de - Broglie wavelength lambdaof a particle is related to ...

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  16. How does the maximum K.E. of electron emitted vary with work function ...

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  17. Does work function depend on the frequency of incident radiation?

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  18. How does stopping potential vary on increasing the intensity of incide...

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  19. What is the frequency of radiation whose photon has energy 20 eV?

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  20. The work function of a metal is 3.45 eV. Calculate what should be the ...

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  21. A 100 watt sodium lamp is emitting light of W.L 5890Å . Calculate the ...

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