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Why the photoelectric cell is also calle...

Why the photoelectric cell is also called an elecric eye?

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Because Photoelectric cell is used in burglar alarms, counting currency notes, counting the number of person entering in a hall, bank. That is why it is also called an electric eye.
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BETTER CHOICE PUBLICATION-PARTICLE NATURE OF RADIATION-SHORT ANSWER TYPE QUESTIONS
  1. Why the photoelectric cell is also called an elecric eye?

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  2. Why are alkali metals most suited as photosensitive materials?

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  3. Explain 'stopping potential' and 'threshold frequency' in photoelectri...

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  4. Are matter waves electromagnetic?

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  5. What is the rest mass of a photon?

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  6. What is photo electric cells? Give its two applications.

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  7. It is harder to remove free electrons from copper than from sodium. Wh...

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  8. Blue light can eject electrons from a Photo-sensitive surface, while ...

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  9. Derive Einstein's' photoelectric equation in terms of frequency.

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  10. State the four laws of photoelectric emission.

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  11. What are Photons? Give its two properties.

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  12. Green light ejects electrons from a certain photosensitive surface, ye...

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  13. Write Einsteins's photoelectric equation.

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  14. What is phtotelecric effect?Explain the effect of increase of intensi...

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  15. Define photoeletjric effect ,work function,stopping potential and thre...

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  16. What are Photons? Give its two properties.

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  17. Derive Einstein's' photoelectric equation in terms of frequency.

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  18. What is photoelectric effect? State it laws?

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  19. What is photoelectric cell? Explain any one of the photoelectric cells...

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  20. What is photoelectric cell?How dies it work ?Give its practical uses.

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