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  • Question 1
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    If maximum velocity with which an electron can be emitted from a photo cell is 3.75 ×108 cms−1 then stopping potential is

     

  • Question 2
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    In an experiment of photoelectric emission for incident light of 4000  Â, the stopping potential is 2V. If the wavelength of incident light is made 3000  Â, then stopping potential will be

     

  • Question 3
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    In the above experimental set up for studying photoelectric effect, if keeping the frequency of the incident radiation and the accelerating potential fixed, the intensity of light is varied, then

     

     

  • Question 4
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    Photo-electric effect can be explained only by assuming that light

     

  • Question 5
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    Wavelength of light incident on a photo cell is 3000  Â, if stopping potential is 2.5 volts, then work function of the cathode of photo cell is

     

  • Question 6
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    in photoelectric effect, the photoelectric current

     

  • Question 7
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    In various experiments on photo electricity the stopping potential for a given frequency of the incident radiation

     

  • Question 8
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    In order to increase the kinetic energy of ejected photoelectrons, there should be an increase in

     

  • Question 9
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    Each photon has the same speed but different

     

  • Question 10
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    Number of ejected photoelectrons increases with increase

     

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