Q141 / 200 · NEET 2022 (Phase 2) · Physics

If the screen is moved away from the plane of the slits in a Young's double slit experiment, then the:

  • A
    angular separation of the fringes increases
  • B
    angular separation of the fringes decreases
  • Correct answer
    C
    linear separation of the fringes increases
  • D
    linear separation of the fringes decreases

Solution

As per YDSE, $x=\frac{\lambda \mathrm{D}}{d}$, (where, symbols have their usual meanings) If the screen is moving away from the slits then D increases, and hence the fringe width $(x)$ increases.

Hence, the correct answer is option: 'C'.

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