JEE Main 2013 — Ray Optics Question with Solution
JEE Main 2013 (22 Apr Online)
Question
This question has Statement-1 and Statement-2. Of the four choices given after the Statements, choose the one that best describes the two Statements.
Statement-1: Short wave transmission is achieved due to the total internal reflection of the e-m wave from an appropriate height in the ionosphere.
Statement-2: Refractive index of a plasma is independent of the frequency of e-m waves.
Choose an option
Show full solutionCorrect option: A
Correct answer
AStatement-1 is true, Statement- 2 is false.
Step-by-step explanation
Effective refractive index of the ionosphere
where is the frequency of em waves
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This is a previous-year question from JEE Main 2013, covering the Ray Optics 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.