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JEE Main 2006 (AIEEE) · Photoelectric Experiment: Intensity, Stopping Potential & Graphs

Photoelectric Experiment: Intensity, Stopping Potential & Graphs question from JEE Main 2006 (AIEEE)

Q76JEE Main 2006 · AIEEEEasy

Photoelectric Experiment: Intensity, Stopping Potential & Graphs

The time taken by a photoelectron to come out after the photon strikes is approximately

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Answer: (b)

Photoemission is practically instantaneous: a photon gives all its energy to one electron in a single collision.
The observed time lag is about $10^{-9}$ to $10^{-10}\ s$ .
So the answer is (b) $10^{-10}\ s$ .

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