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When light off frequency v1 is incident...

When light off frequency `v_1` is incident on a photosensitive surface , the stopping potential is `V_1` . If the frequency of incident radiation becomes `v_1//2` the stopping potential changes to `V_2` Find out the expression for the threshold frequency for the surface in terms of `V_1 and V_2`
If the frequency of incident radiation is doubled , will the maximum kinetic energy of the photoelectrons also be doubled ? Given reason .

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MODERN PUBLICATION-DUAL NATURE OF RADIATION AND MATTER -Revision Exercises (Short Answer Questions)
  1. If the work function of two metals X and Y are 4.17 eV and 8.24xx10^(-...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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