JEE Main 2023 — Electromagnetic Waves Question with Solution
JEE Main 2023 (13 Apr Shift 2)
Question
Given below are two statements:
Statement I : Out of microwaves, infrared rays and ultraviolet rays, ultraviolet rays are the most effective for the emission of electrons from a metallic surface
Statement II : Above the threshold frequency, the maximum kinetic energy of photoelectrons is inversely proportional to the frequency of the incident light
In the light of above statements, choose the correct answer from the options given below
Choose an option
Show full solutionCorrect option: B
Step-by-step explanation
Out of the three types of radiation, UV rays would be having highest frequency. The maximum kinetic energy is
Clearly, the maximum kinetic energy is dependant on the frequency of the incident radiation and the work function of the metal.
From the given spectrums UV rays have the highest energy. Hence, this option is the correct one.
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This is a previous-year question from JEE Main 2023, covering the Electromagnetic Waves 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.