JEE Main 2010 — Wave Optics Question with Solution
From: AIEEE 2010
Question
An initially parallel cylindrical beam travels in a medium of refractive index where and are positive constants and is the intensity of the light beam. The intensity of the beam is decreasing with increasing radius.
The initial shape of the wavefront of the beam is
Choose an option
Show full solutionCorrect option: D
Correct answer
Dplanar
Step-by-step explanation
Initially the parallel beam is cylindrical. Therefore, the wave-front will be planar.
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This is a previous-year question from JEE Main 2010, covering the Wave 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.