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Engineering
1 month, 1 week ago

 When a certain photosensitive surface is illuminated with monochromatic light of frequency \nu , the stopping potential for the photo current is - \frac{V_{0}}{2} . When the surface is illuminated by monochromatic light of frequency \frac{\nu}{2} , the stopping potential is - V_{0} . The threshold frequency for photoelectic emission is :  

  • Option 1)

     2\nu

  • Option 2)

    \frac{3\nu}{2}

  • Option 3)

    \frac{4\nu}{3}

  • Option 4)

    \frac{5\nu}{3}

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A admin
Answered 4 weeks, 1 day ago
  Stopping Potential /Cut-off Potential - It is defined as the potential necessary to stop any electron from reaching the other side. -   For v frequency stoping potential is For frequency stoping potential is -v0 So for frequency For    frequency From 1 and 2 We get so Option 1) 2Option 2)Option 3)Option 4)
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