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  3. Physics
  4. In Young's pattern is obtained on a screen interference pattern is obtained on a screen by a light of wavelength 6000A° coming from the coherent sources S1 and S2 . At certain point p on the screen third dark fringe is formed. Then the path difference S1P-S2P in micron is.

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Q. In Young's pattern is obtained on a screen interference pattern is obtained on a screen by a light of wavelength $6000A^\circ$ coming from the coherent sources $S_1$ and $S_2$ . At certain point p on the screen third dark fringe is formed. Then the path difference $S_1P-S_2P$ in micron is.

Wave Optics

Solution:

$x = (2n - 1) \frac{\lambda}{2}$