JEE Main 2019 — Wave Optics Question with Solution
From: JEE Main 2019 (Online) 9th April Morning Slot
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 μ is put in front of one of the
slits, the central maximum gest shifted by a
distance equal to n fringe widths. If the
wavelength of light used is , t will be :
This question includes a diagram. The text above accompanies the figure.
Choose an option
Show full solutionCorrect option: D
Correct answer
D
Step-by-step explanation
Path difference at central maxima x = ( – 1)t, whole pattern will shift by same amount which will be given by
according to the question
according to the question
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