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In the photoelectric experiment, if we use a monochromatic light, the I - V curve is as shown. If work function of the metal is 2eV, estimate the power of light used. (Assume efficiency of photo emission = 10-3%, i.e. number of photoelectrons emitted are 10-3% of number of photons incident on metal.) 
  • a)
    2 W
  • b)
    5 W
  • c)
    7 W
  • d)
    10 W
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
In the photoelectric experiment, if we use a monochromatic light, the ...
The energy of incident photons is given by
hv = eVs + φ0 = 2 + 5 = 7 eV (Vs is stopping potential and φ0 is work function)
Saturation current (η is photo emission efficiency) 
∴ P = 7W.
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In the photoelectric experiment, if we use a monochromatic light, the I - V curve is as shown. If work function of the metal is 2eV, estimate the power of light used. (Assume efficiency of photo emission = 10-3%, i.e. number of photoelectrons emitted are 10-3% of number of photons incident on metal.)a)2 Wb)5 Wc)7 Wd)10 WCorrect answer is option 'C'. Can you explain this answer?
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In the photoelectric experiment, if we use a monochromatic light, the I - V curve is as shown. If work function of the metal is 2eV, estimate the power of light used. (Assume efficiency of photo emission = 10-3%, i.e. number of photoelectrons emitted are 10-3% of number of photons incident on metal.)a)2 Wb)5 Wc)7 Wd)10 WCorrect answer is option 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about In the photoelectric experiment, if we use a monochromatic light, the I - V curve is as shown. If work function of the metal is 2eV, estimate the power of light used. (Assume efficiency of photo emission = 10-3%, i.e. number of photoelectrons emitted are 10-3% of number of photons incident on metal.)a)2 Wb)5 Wc)7 Wd)10 WCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In the photoelectric experiment, if we use a monochromatic light, the I - V curve is as shown. If work function of the metal is 2eV, estimate the power of light used. (Assume efficiency of photo emission = 10-3%, i.e. number of photoelectrons emitted are 10-3% of number of photons incident on metal.)a)2 Wb)5 Wc)7 Wd)10 WCorrect answer is option 'C'. Can you explain this answer?.
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