JEE Main 2019 — Wave Optics Question with Solution
JEE Main 2019 (09 Apr Shift 1)
Question
The figure shows a Young's double slit experimental setup. It is observed that when a thin transparent sheet of thickness t and refractive index is put in front of one of the slits, the central maximum gets shifted by a distance equal to n fringe width. If the wavelength of light used is then will be:
Choose an option
Show full solutionCorrect option: B
Correct answer
B
Step-by-step explanation
Shift in central maxima
Fringe width
It's given,
Fringe width
It's given,
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This is a previous-year question from JEE Main 2019, 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.