JEE Main 2004 — Electromagnetic Waves Question with Solution
JEE Main 2004
Question
An electromagnetic wave of frequency passes from vacuum into a dielectric medium with permittivity . Then
Choose an option
Show full solutionCorrect option: C
Correct answer
Cwavelength is halved and frequency remains unchanged
Step-by-step explanation
Refractive index,
Speed and wavelength of wave will becomes half, the frequency remaining unchanged (frequency of a wave depends on the source as due to refraction, it is assumed that the energy is conserved. hv remains the same)
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This is a previous-year question from JEE Main 2004, 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.