Home Physics Electron, Photon, Photoelectric Effect and X-rays Hard From the figure describing photoelectric eff…
Physics Electron, Photon, Photoelectric Effect and X-rays Hard MCQ (Single Correct)

From the figure describing photoelectric effect we may infer correctly that

A
Na and Al both have the same threshold frequency
B
Maximum kinetic energy for both the metals depend linearly on the frequency
C
The stopping potentials are different for Na and Al for the same change in frequency
D
Al is a better photo sensitive material than Na

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The correct answer is:
B

Stopping potential equals to maximum kinetic energy. Since stopping potential is varying linearly with the frequency. Therefore max. KE for both the metals also vary linearly with frequency.

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