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JEE PHYSICS MCQ: WAVE OPTICS

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In YDSE experiment, when two light rays make third minima, then they have (

\lambda

wave length of each light ray)

View answer and explanation

Correct option: D

Path difference of

\frac{{5\,\lambda }}{2}

Option D (Path difference of

\frac{{5\lambda}}{{2}}

) is correct because for the third minima, the path difference is given by

(2n-1)\frac{{\lambda}}{{2}}

where n=3.

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