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The given graph shows the variation of K...

The given graph shows the variation of KE with frequency of incident radiations for two surfaces A and B.

(a) Which of the metals has greater work function ? For which of the metals will stopping potential be more for the same frequency of incident radiation ?
(b) The work function caesium metal is 2.14 eV. When light of frequency `6xx10^(14)` Hz. incident on the metal surface , what is the maximum KE of the photoelectrons and stopping potential ?

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MODERN PUBLICATION-DUAL NATURE OF RADIATION AND MATTER -Revision Exercises (Short Answer Questions)
  1. A proton and an alpha particle are accelerated through same potential ...

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  2. If an em wave of wavelength lambda is incident on a photosensitive sur...

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  3. Write the three characteristic features in photoelectric effect which...

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  4. When a given photosensitive material is irradiated with light of frequ...

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  5. Draw and explain the graph showing the variation of stopping potential...

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  6. (a) State three important properties of photons which describe the par...

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  7. In a plot of photoelectric current versus anode potential, how does ...

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  8. fig. shows variation of stopping potential (V0) with frequency (v) for...

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  9. (i) How does one explain the emission of electron from a photosensitiv...

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  10. Plot a graph showing variation of de-broglie wavelength lambda versus ...

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  11. A proton and deutron are accelerated through the same accelerating pot...

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  12. Derive an expression for the de Broglie wavelength associated with an ...

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  13. A proton and an alpha-particle are accelerated through same potential ...

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  14. A photon and an elecron have the same de Broglie wavelength. Which has...

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  15. Kinetic energy of proton is the same as that of an alpha-particle. Wha...

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  16. In the study of a photoelectric effect the graph between the stopping ...

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  17. Explain the term stopping potential and threshold frequency.

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  18. The given graph shows the variation of KE with frequency of incident ...

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  19. How does Davisson and Germer's experiment verify the wave nature of el...

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  20. If light of wavelength 412.5 nm is incident on each of the metals give...

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