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From the following figure describing photoelectric effect, we may infer correctly that
  • a)
    Na and AI both have same threshold frequency
  • b)
    maximum kinetic energy for both the metals depends linearly on the frequency
  • c)
    stopping potentials are different for Na and AI for the same frequency
  • d)
    AI is a better photosensitive material than Na
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
From the following figure describing photoelectric effect, we may inf...
Kinetic energy of the emitted electrons is given by
where is the work function.
Stopping potential V is given by:
So, we can say that it is a straight line whose slope gives the ratio of Plank's constant to the charge on the electron and intercept gives the work function (in eV).
The maximum KE of the photoelectron is
Hence, maximum KE varies linearly with frequency.
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From the following figure describing photoelectric effect, we may infer correctly thata)Na and AI both have same threshold frequencyb)maximum kinetic energy for both the metals depends linearly on the frequencyc)stopping potentials are different for Na and AI for the same frequencyd)AI is a better photosensitive material than NaCorrect answer is option 'B'. Can you explain this answer?
Question Description
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