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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
  • a)
    1.64 eV
  • b)
    1.56 eV
  • c)
    1.52 eV
  • d)
    1.41 eV
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Wavelength of light incident on a photo cell is 3000Â, if stoppi...
The Stopping potential =2.5V.
or, Kinetic energy=2.5eV.
We know that,
Incident energy =work function + Kinetic energy.
To get incident energy in e.V,
We also know that,
The Incident energy =12400/λ Å
Incident energy=work function + kinetic energy.
12400/3000 = work function + 2.5e.v.
4.13-2.5 = work function
work function=1.64 e.V
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Community Answer
Wavelength of light incident on a photo cell is 3000Â, if stoppi...
Vs-Stopping potential =2.5V.Kinetic energy=2.5eV.Incident energy =work function + Kinetic energy..To get incident energy in e.V,Incident energy =12400 /lambda in Angstrom....Incident energy=work function + kinetic energy.12400/3000 = work function + 2.5e.v.4.13-2.5 = work function..1.63 e.V=work function...
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Wavelength of light incident on a photo cell is 3000Â, if stopping potential is 2.5 volts, then work function of the cathode of photo cell isa)1.64 eVb)1.56 eVc)1.52 eVd)1.41 eVCorrect answer is option 'A'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Wavelength of light incident on a photo cell is 3000Â, if stopping potential is 2.5 volts, then work function of the cathode of photo cell isa)1.64 eVb)1.56 eVc)1.52 eVd)1.41 eVCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Wavelength of light incident on a photo cell is 3000Â, if stopping potential is 2.5 volts, then work function of the cathode of photo cell isa)1.64 eVb)1.56 eVc)1.52 eVd)1.41 eVCorrect answer is option 'A'. Can you explain this answer?.
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