JEE Main 2020PhysicsDual Nature of MatterEasyMCQ

JEE Main 2020 — Dual Nature of Matter Question with Solution

JEE Main 2020 (04 Sep Shift 2)

Question

In a photoelectric effect experiment, the graph of stopping potential V versus reciprocal of wavelength obtained is shown in the figure. As the intensity of incident radiation is increased : 

Choose an option

Show full solutionCorrect option: D
Correct answer
DGraph does not change

Step-by-step explanation

Einstein's photoelectric equation is given by,

eVs=hν-Wo, where Wo is the work function.

⇒Vs=hceλ-Woe, where c=νλ.

Intensity does not affect the frequency and work function of a material. Therefore, the graph does not change with increasing intensity.

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About this question

This is a previous-year question from JEE Main 2020, covering the Dual Nature of Matter chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.