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(a) Define the terms , (i) threshold fre...

(a) Define the terms , (i) threshold frequency and (ii) stopping potential in photoelectric effect.
(b) Plot a graph of photocurrent versus anode potential for a radiation of frequency v and intensities `I_1 and I_2`.
`(I_1 lt I_2)` .

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MODERN PUBLICATION-DUAL NATURE OF RADIATION AND MATTER -Revision Exercises (Short Answer Questions)
  1. Maximum kinetic energy of the photoelectrons is independent of the int...

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  2. (a) Define the terms , (i) threshold frequency and (ii) stopping poten...

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  3. (a) State the laws of photoelectric emission.

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  4. Define 'threshold frequency ' and ' work function ' of a metal . Show ...

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  5. If the work function of two metals X and Y are 4.17 eV and 8.24xx10^(-...

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  6. The stopping potential (v0) varies linearly with the frequency (v)of ...

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  7. When light off frequency v1 is incident on a photosensitive surface ,...

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  8. Light of intensity I and frequency nu is incident on a photosensitive ...

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  9. (a) What is photo electric effect ? State the laws of photo - electric...

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  10. The maximum kinetic energy of photoelectron is doubled when the wavele...

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  11. Derive de Broglie wave equation for material particles. (b) Why does...

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  12. The following graph shows the variation of photoelectric current for a...

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  13. (b) Calculate de Broglie wavelength for an electron moving with a spee...

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  14. The graph shows variation of stopping potential V(0) versus frequency ...

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  15. Draw a plot showing the variation of photoelectric current with collec...

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

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

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

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

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

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