Physics-
General
Easy
Question
From the figure describing photoelectric effect we may infer correctly that
- Na and Al both have the same threshold frequency
- Maximum kinetic energy for both the metals depend linearly on the frequency
- The stopping potentials are different for Na and Al for the same change in frequency
- Al is a better photo sensitive material than Na
The correct answer is: Maximum kinetic energy for both the metals depend linearly on the frequency
The graph between stopping potential and frequency is a straight line, so stopping potential and hence, maximum kinetic energy of photoelectrons depends linearly on the frequency.
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