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NEET 2004 (AIPMT) · Photoelectric Experiment: Intensity, Stopping Potential & Graphs

Photoelectric Experiment: Intensity, Stopping Potential & Graphs question from NEET 2004 (AIPMT)

Q79NEET 2004 · AIPMTEasy

Photoelectric Experiment: Intensity, Stopping Potential & Graphs

According to Einstein's photoelectric equation, the graph between the kinetic energy of photoelectrons ejected and the frequency of incident radiation is

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Answer: (d)

$KE_{max} = h\nu - \phi$ : a straight line with positive slope $h$ .
$KE = 0$ for $\nu \le \nu_0$ , so the line starts on the frequency axis at $\nu_0 > 0$ , not at the origin.
So the answer is (d), the straight line starting at a non-zero frequency.

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