JEE Main 2013 — Dual Nature of Matter Question with Solution
JEE Main 2013 (07 Apr)
Question
The anode voltage of a photocell is kept fixed. The wavelength of the light falling on the cathode is gradually changed. The plate current of the photocell varies as follows :
Choose an option
Show full solutionCorrect option: B
Correct answer
B
Step-by-step explanation
As λ is increased, there will be a value of λ above which photo-electron will be cease to come out, so photo-current will becomes zero.
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This is a previous-year question from JEE Main 2013, 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.