In a YDSE with two identical slits, when the upper slit is covered with a thin, perfectly…
Physics · JEE Main · NTA Exams — Optics
In a YDSE with two identical slits, when the upper slit is covered with a thin, perfectly transparent sheet of mica, the intensity at the centre of screen reduces to 75% of the initial value. Second minima is observed to be above this point and third maxima below it. Which of the following cannot be a possible value of phase difference caused by the mica sheet?
- \(\frac{\pi}{3}\)
- \(\frac{13 \pi}{3}\)
- \(\frac{17 \pi}{3}\)
- \(\frac{11 \pi}{3}\)
Answer
(A) 3
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