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a. What is the purpose of Cu(2)? b. W...


a. What is the purpose of `Cu_(2)`?
b. Which plate becomes positive?
c. Which plate becomes negative?

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a. Cuprous oxide is a photosensitive semiconductor.
b. Cu
c. Ag
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NEW JOYTHI PUBLICATION-DUAL NATURE OF RADIATION AND MATTER -EVALUATION QUESTIONS AND ANSWERS
  1. Find the effective capacity of the combination shown below :

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  2. The above graph shows frequency of an incident photon and maximum kine...

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  3. a. What is the purpose of Cu(2)? b. Which plate becomes positive? ...

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  4. a. Why de-Broglie wave associated with a moving car is not visible ? ...

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  5. a. Give the expression showing the relation between energy and moment...

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  6. a. The wave nature of matter is not noticeable in our daily observati...

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  7. What do the graphs represent?

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

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

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

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  11. Define 1 eV.

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

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

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

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  15. Why is photocurrent proportional to intensity?

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  16. What is saturation current?

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  17. How does a fire alarm work?

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

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

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

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