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Why are alkali metal most suited for pho...

Why are alkali metal most suited for photoelectric emission?

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The work function of alkali metal is quite low and also its threshold energy is almost equal to that of photons of visible light. For this reason alkali metals are most suited for photoelectric emission.
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NEW JOYTHI PUBLICATION-DUAL NATURE OF RADIATION AND MATTER -EVALUATION QUESTIONS AND ANSWERS
  1. a. The wave nature of matter is not noticeable in our daily observati...

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  2. What do the graphs represent?

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  3. Which of the following statements are is not correct about a photon?

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  4. a. Every metal has a definite work function. Why all photoelectrons ...

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  5. Eventhough metals have free electrons, they cannot escape from metal ...

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  6. Define 1 eV.

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  7. What are the factors on which the rate of thermionic emission depends?

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  8. Does photoelectric effect violate the law of conservation of energy?

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  9. Give examples for metals sensitive to UV rays and then for visible lig...

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  10. Why is photocurrent proportional to intensity?

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  11. What is saturation current?

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  12. How does a fire alarm work?

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  13. Does wave theory give proper explanation for photoelectric effect?

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  14. Why is light not deflected by electric and magnetic fields?

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  15. Why are alkali metal most suited for photoelectric emission?

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  16. Why wooden surface does not exhibit photoelectric effect?

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  17. A fast moving bullet is not diffracted by a crystal surface, while an ...

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  18. An electron and a proton have same speed. How are their wavelength rel...

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  19. Millikan verified Einstein's photoelectric equation. How?

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  20. If a proton and electron have the same de-Broglie wavelength, then

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